Machu Picchu’s Enigmatic Age: Unveiling the Secrets through Dating Techniques

By Sofia Slavonia

Machu Picchu, the iconic 15th-century Inca citadel perched high in the Andes of southern Peru, has always been shrouded in historical mystery. Recently, a study led by Yale archaeologist Richard Burger has unveiled an unexpected revelation: Machu Picchu is decades older than previously believed. This revelation was achieved through the application of absolute dating techniques, specifically radiocarbon dating methods, offering insights that challenge established historical narratives and underscore the crucial role of dating in archaeology.

Historical records had previously suggested that Machu Picchu (Figure 1) was constructed around A.D. 1440, during the reign of Inca Emperor Pachacuti. However, the findings of Burger’s team tell a different story. They employed accelerator mass spectrometry (AMS), a sophisticated form of radiocarbon dating, to examine human remains unearthed at the site during early 20th-century excavations. Essentially, by measuring the remaining carbon-14 in a sample and comparing it to stable carbon isotopes (Renfrew 2018), archaeologists can determine the age of organic materials (Figure 2).

Figure 1.  Machu Picchu, located around 50 miles northwest of Cusco, Peru. Photograph by Eitan Abramovich.

The results of this scientific endeavor reveal a remarkable truth: Machu Picchu was occupied from approximately A.D. 1420 to A.D. 1530. This discovery extends the site’s age by at least 20 years, bringing into question established notions of Inca chronology. According to Burger, “The results suggest that the discussion of the development of the Inca empire based primarily on colonial records needs revision” (Cummings 2021).

Figure 2. Flow chart on radiocarbon dating: production and decay in our atmosphere. Chart by Australian National University.

In conclusion, Machu Picchu’s reevaluated age challenges preconceived notions and underscores the importance of dating methods in archaeology. These findings not only impact our understanding of Machu Picchu but also shed light on the broader context of Inca history. It implies that Inca Emperor Pachacuti began his conquests decades earlier than previously thought, signifying a shift in the timeline of Inca expansion. In essence, dating techniques in archaeology serve as the bedrock upon which our comprehension of the past is built. They allow us to peer through the veil of time and uncover the mysteries that have long eluded us, ultimately reshaping our perceptions of history. As we continue to refine our dating methods, we can look forward to even more revelations that will challenge our assumptions and broaden our understanding of the ancient world.

Reference List: 

Cummings, Mike. 2021. “Machu Picchu Older than Expected, Study Reveals.” YaleNews, August 5, 2021.

Renfrew, Colin, and Paul Bahn. 2018. Archaeology Essentials: Theories, Methods, and Practice. Fourth edition: 123-126. Thames & Hudson

Photo Sources:

Figure 1. Orson, Diane. December 15, 2010. “Yale Returns Machu Picchu Artifacts to Peru.” NPR. 

Figure 2. “Research School of Earth Sciences.” Radiocarbon dating: background | ANU Research School of Earth Sciences. https://earthsciences.anu.edu.au/research/facilities/anu-radiocarbon-laboratory/radiocarbon-dating-background. 

Additional Content: 

If you’re interested in learning more about radiocarbon dating visit this page: https://earthsciences.anu.edu.au/research/facilities/anu-radiocarbon-laboratory/radiocarbon-dating-background 

If you’re interested in learning more about Machu Picchu’s history visit this page: https://www.history.com/topics/south-america/machu-picchu

Unlocking the Past of the Aztec Ruins through Dendrology

Dendrology, or the study of growth tree rings, is widely used to create chronological records to date artifacts. These rings tell us a life story about the tree, like season-long weather patterns or climate change. Developed by American astronomer A.E. Douglass in the early 1900s, dendrology has evolved to have two uses. It is used “as a successful means of calibrating or correcting radiocarbon uses and as an independent method of absolute dating in its own right” (Renfrew and Paul, 1996). 

At first glance, the process may seem straightforward. Counting the rings on the stump of a tree gives the annual growth, like barcodes containing information about the entirety of the tree’s past. These rings, varying in width and character, give valuable insights to dendrologists about sunlight exposure, temperature fluctuations, and the availability of nourishment throughout a tree’s lifetime. Dendrologists can use this information to create a bigger picture of the regional climate. Often referred to as cross-dating, scientists are able to build a chronology from living trees, dead trees, and ancient wood that can date back hundreds or thousands of years.

A cottonwood tree stump near the Aztec Ruins National Monument Visitor Center (Nicolette Brown 2022).

Dendrologists studied the buildings of the Aztec Ruins to delve deeper into the way of life of the Pueblos who once lived there. They examined the outermost ring of the tree beams used to build structures like roofs. These outermost rings, representing the year the tree was cut, synchronize with the era when the wood was used for construction. By connecting the timeline of the cuts, dendrologists are able to gather more information about when the area was inhabited. Since beams were continually breaking when the Pueblos were living at the Aztec Ruins, people were constantly replacing the beams. As beams continuously broke and were replaced, dendrologists identified the final beam replacement to be 1269, marking the anticipated time the Pueblo people abandoned the Ruins. 

The ring patterns give more information than solely when the Aztec Ruins were inhabited. Dendrologists are able to learn the seasons the ancestral Pueblo people harvested their wood. They found that “Harvesting actually took place during the early spring of 1119 AD, before most trees had begun to produce a layer that would correspond to the year 1119 AD (National Park Service).” The early spring harvest was strategically timed to avoid the flow of sap, ensuring the strength and durability of the support beams as trees with sap are less stable.

An archaeologist studying the wooden beams at Aztec Ruins (National Park Service 2022).

The width of the tree itself provides historical climate data. The tree stumps show that the ancestral Pueblo people have weathered many droughts, and the dendrologists were able to identify the time periods these droughts occurred. By understanding the timing of extreme weather patterns, dendrologists can map out when the Pueblo people migrated to other places to seek out a more abundant water source. 

Often looked past, trees have the ability to be storytellers that give us a glimpse into the past. Because of dendrology, people are able to make more sense of the world, unlocking various narratives that we often see in textbooks today. 

Further Research Links 

Dendrology and the Aztecs

http://npshistory.com/brochures/azru/dendrochronology.pdf  

Tree rings and Earth’s past climate

https://climate.nasa.gov/news/2540/tree-rings-provide-snapshots-of-earths-past-climate/

Works Cited

Geerdt Magiels. “What tree rings and core samples tell us about our world. the low countries.” The Low Countries. 2020, November 19. https://www.the-low-countries.com/article/what-tree-rings-and-core-samples-tell-us-about-our-world#:~:text=The%20oldest%20known%20living%20tree,you%20can%20easily%20read%20them 

Koppes, Steve, and Louise Lerner. “Carbon-14 Dating, Explained.” University of Chicago News. n.d. https://news.uchicago.edu/explainer/what-is-carbon-14-dating.  

National Park Service. “Dendrochronology”. NPS History. 2022, September 17. http://npshistory.com/brochures/azru/dendrochronology.pdf 


Renfrew, Colin, 1937- and Paul G. Bahn. 1996. Archaeology: Theories, Methods, and Practice. London, Thames and Hudson.

The Pilentum from Pompeii

By Luna Kang

A stunning chariot was unearthed recently in Pompeii, Italy. Even though many archaeologists unearth all sorts of artifacts in Pompeii, this find was unique because of its exceptional condition and because archaeologists identified it as a pilentum. A pilentum was a ceremonial cart used to transport elite members of the community to ceremonies or parades. By restoring this chariot to its former beauty, archaeologists can understand more about the culture in Pompeii before the eruption of Mt. Vesuvius.

Roman chariots that are found are built from vastly different materials than today’s more modern transportation. Roman chariots were often made of wood for the body and seats and iron for the wheels. This specific chariot was also made with bronze ornaments covering the body’s outside. Each material used to build this chariot helps archaeologists put a date stamp on the artifact. For instance, the iron and bronze metals used are typical of Roman works, such as their armor, weapons, chariots, and boats. By observing what the artifact is made from, archaeologists can place it along a timetable of Earth’s history.

Archaeologists uncovering the chariot.

Archaeologists found the chariot on January 7th, 2023. A small iron artifact caused the archaeologists to believe something bigger was buried beneath them. After excavating for weeks, the team unearthed a big chariot. This splendid chariot, now identified as a pilentum, wasn’t used for gardening, carrying trash, or running errands. This four-wheel processional chariot was reserved for parades and processions or for bringing the lucky bride to her new home. The chariot, which was recently on display at Pompeii for the first time in 2023, was located almost entirely intact in a portico connected to the horse stables at an ancient villa near the walls of the city. A layer of cinerite had protected the high iron wheels, the arms and backrest, and the elegant decorations along both sides of the chassis.

The restored chariot, now on display to the public at the Museo Nazionale Romano.

According to Massimo Osanna, Director General of Italian Museums, “When the chariot was discovered during the excavation, it was of exceptional importance due to the information it offered about this form of transport – a ceremonial vehicle – which has no parallel in Italy. . . . This is the first time that a pilentum has ever been reconstructed and carefully studied.” Because of this discovery, made possible by the destructive force of Mt. Vesuvius’s ash, we can understand more about the hierarchy of Roman civilization.

Further Research:
The History of Pompeii
The Full Reconstruction

Reference List:
http://pompeiisites.org/en/comunicati/reconstruction-of-the-ceremonial-chariot-from-civita-giuliana/
https://www.history.com/topics/ancient-rome/pompeii
https://education.nationalgeographic.org/resource/volcanic-ash/

The Cave of Altamira

The Cave of Altamira is one of the biggest archaeological discoveries in history. The cave was discovered by Modesto Cubillas in 1868. It is located in the Spanish province of Cantabria, near the town of Santillana del Mar. The first excavation works of the site began in 1879. In 1985, the cave was declared a UNESCO World Heritage Site, and the cave has since been closed to the public for conservation reasons.

The cave was formed due to collapses due to karstic phenomena of Mount Vispieres. It is about 1,000 meters long, consisting of a series of passages and chambers. It can be divided into three sections; the entrance, the polycrome room, and the gallery. Archaeologists have discovered artifacts from Upper Solutrean (c. 18,500 years ago) and Lower Magdalenian (c. 16,590 – 14,000 years ago) periods, implying that humans inhabited the cave in these time periods. In between these two time periods, the cave was inhabited only by animals.

When Juan Vilanova y Piera and Marcelino Sanz de Sautuola, the first archaeologists to excavate the site, published their work, it was met with much skepticism. A group of French specialists were adamant in rejecting the work of Sautuola and Piera. They argued that the paintings were too well maintained and contained too much artistic quality to be from the Paleolithic era. Sautuola was even accused of paying a contemporary artist to forge the paintings. In 1902, due to other prehistoric paintings being found, the French specialists recant their statements and apologized for their mistake in opposing the work of the original archaeologists.

Archaeologists studying the paintings on the ceiling of the cave.

Archeologists have found animal bones, ash from fireplaces, and flint objects such as knives and axes. Since these artifacts were discovered in different layers of sediments, it is assumed that humans inhabited the cave for long periods of time. The cave was likely well positioned, allowing the inhabitants to take advantage of the wildlife that lived in the valleys of the surrounding mountains. Evidence of human inhabitants has only been discovered at the mouth of the cave.

The most famous aspect of the cave is the numerous cave paintings that line the walls. The paintings depict animals, abstract shapes, human hands, and a series of dots. There are 25 colored images in the cave, mostly red and black. The humans that made the paintings used a flint object to engrave the wall, charcoal to draw a black lines. Later, color was added to the drawings. Impressively, the painters took advantage of the natural contours of the cave walls, giving a three dimensional look to their art.

This is a painting in the Cave of Altamira depicting a bison.

The Cave of Altamira has significantly shifted our views on human life in the Paleolithic period. This was the first time that Paleolithic cave art was discovered, showing that people from this era were able to make carvings and paintings onto rock formations. The cave also gives an insight into the daily life of people of this era, as well as their culture.

Citation:

Lidya Pelayo Alonso, “Atlamira”. World History Encyclopedia. December 13, 2015. https://www.worldhistory.org/Altamira/. 

Alvarez, Stephen, “Altamira Cave.” Ancient Art Archive. April 3, 2022. https://www.ancientartarchive.org/altamira-cave-spain/. 

Raphael Minder, “Back to the Cave of Altamira in Spain, Still Controversial”. The New York Times. July 30, 2014. https://www.nytimes.com/2014/07/31/arts/international/back-to-the-cave-of-altamira-in-spain-still-controversial.html

Additional Links:

https://whc.unesco.org/en/list/310/

https://www.culturaydeporte.gob.es/mnaltamira/home.html

LiDAR and Its Applications to Incredible Discoveries in Guatemala

By: Kieran Chai-Onn

As technology continues to advance, our world is able to continue advancing at an incredible rate. In recent years archaeologists have used the increase in technology to look into the past and provide lessons from our history. By using ground penetrating lasers known as LiDAR (Light Detection and Ranging) archeologists are able to find sites (locations of past human activity) that have previously been covered in dense vegetation or in remote areas (Nicioli, 2023). LiDAR has been extremely useful in the thick rainforests of South America where trying to find past Mayan civilizations has proven difficult for two main reasons. Firstly, the Amazon rainforest covers nearly 40% of the South American continent so LiDAR makes covering nearly 2.72 million square miles feasible (Butler,2022). Secondly, by getting through such dense vegetation you could very easily harm ecosystems. So while LiDAR itself is incredible what was found in Guatemala is a true testament to the power of advancing technology in the archeological sector. 

LiDAR Images of causeways found in Guatemala. Ryan Whitwam 2017.

In the Mirador-Calakmul Karst Basin (MCKB) nearly 775 ancient Maya settlements were revealed in, “one of the largest, contiguous, regional LiDAR studies published to date” (Hansen et al, 2022). In order to achieve these discoveries the process began in 2015 with two aerial surveys of over 1703 square kilometers within the southern half of the MCKB (Hansen et al, 2022). With such an expansive project the LiDAR was able to help cover the region but also allowed archaeologists to learn about the region through, “mapping of settlement observations and cultural features, and enabled detailed environmental, geological, geomorphological, and hydrological interpretation” (Hansen et al, 2022). 

While the Technology is undoubtedly fascinating it is what can be taken away from these LiDAR surveys that really gives us a better understanding of those who walked this earth centuries ago. The discovery of 417 interconnected Mayan cities connected by raised causeways completely changed the modern perception of transportation at the time (Nicioli, 2022). With this interconnectedness of their cities, it has become fascinating how these causeways were a means of communication between people from city to city. While it is assumed that there were no wheeled vehicles on the roads they at times were almost half a football field wide, acting like a spiderweb connecting town to town much like the North American highway system (Nicioli, 2022). Finally, this showed the systematic consistency of construction amongst Mayans because they stacked boxes similar to their pyramids to create the highways (Nicioli, 2022). With incredible construction and many lessons to be taken away, it is fascinating to learn from the Mayans how things we consider modern luxuries might not be so modern after all. 

Above are the raised causeways discovered within the rainforest. Taken by the University of Cambridge (Hansen 2022).

With the use of LiDAR, an incredible understanding of the Mayans has taught us how powerful being an interconnected system of cities can be even centuries ago; something that all would have been hidden and consumed by the sprawling Amazon rainforest. 

Further Research Links: 

The use of LiDAR to find ancient civilizations: https://www.businessinsider.com/ancient-civilizations-that-were-hiding-in-plain-sight-2023-1

How the Mayan Highways were used:https://uchicagoanthropology.shorthandstories.com/maya-roads/index.html#:~:text=General%20Overview%20of%20Maya%20Roads&text=Famous%20for%20not%20having%20vehicles,divert%20surface%20water%20(Pugh).

Works Cited

Butler, Rhett A. “Facts about the Amazon Rainforest for 2022.” Mongabay, February 25, 2022. https://rainforests.mongabay.com/amazon/amazon-rainforest-facts.html.

Hansen, Richard D., Carlos Morales-Aguilar, Josephine Thompson, Ross Ensley, Enrique Hernández, Thomas Schreiner, Edgar Suyuc-Ley, and Gustavo Martínez. “LiDAR Analyses in the Contiguous Mirador-Calakmul Karst Basin, Guatemala: An Introduction to New Perspectives on Regional Early Maya Socioeconomic and Political Organization.” Ancient Mesoamerica, December 5, 2022, 1–40. https://doi.org/10.1017/S0956536122000244.

Nicioli, Taylor. “Discovery of ‘superhighways’ Suggests Early Mayan Civilization Was More Advanced than Previously Thought.” CNN, February 16, 2023. https://www.cnn.com/2023/02/16/world/maya-civilization-causeways-lidar-discovery-scn/index.html.

Whitwam, Ryan. “Lidar Used to Map Ancient Mayan Superhighway System.” Extreme Tech. Extreme Tech, January 31, 2017. https://www.extremetech.com/extreme/243639-lidar-used-map-ancient-mayan-superhighway-system.

The Christian and Jewish Catacombs under Roman Reign

Underneath the land of Rome, there are thousands of early Christian catacombs. Like Pompeii, these archaeological sites in Rome are not time capsules, instead, they tell the story of an active changing process in Christian and Jewish culture. 

The first approach archaeologists use to understand the catacombs is to analyze their locations. Professor Frank Korn, the Author of Hidden Rome and A Catholic’s Guide to Rome talks about why pagans, Jews, and Christians in the 2nd century all chose to build their cemeteries next to the main roads. They have to follow the Extra Muros (the Latin expression for “outside the wall”) law which forbids people from building burials inside the city walls for sanitation purposes. Thus, lots of catacombs are located near the main roads leading out of Rome. 

Some people argue that the Jewish and Christian catacombs were built underground and outside the city center to avoid Roman persecution. But this theory is likely very deviate from the truth. First, the scale of the catacombs is often huge, their capacity varies from several hundred tombs to 90,000 tombs. Frank Korn mentioned in his interview that “some archaeologists thought that if the tunnels were to be placed end to end in a straight continuous line, they would stretch longer than the boot-shaped peninsula of Italy itself, that is to say about 750 miles.” Such a large-scale catacomb can be easily found by the Romans if they were aiming for religious persecution of the Christians. 

Second, the funeral ceremony would take place in the catacomb. The Jewish and Christian ideas about the deceased and the afterlife are very different from those of the Romans who conducted cremation. Christians think that the bodies are very important because all the dead will be resurrected from the tombs and receive their last judgment from God during the last judgment. Thus, they preserve the bodies in the cells of the catacomb. Three types of features can be found in the catacomb: loculus, arcosolium, and cubiculum. Cubiculum also serves as a family chapel for ceremonies and religious activities and is often decorated with frescos and inscriptions. If the Christians were trying to keep the catacomb as a secret shelter, such a place for family gatherings would not appear as a part of the catacomb.

Figure 1. loculus, rectangular tombs to place the bodies.

In fact, the images painted on the walls of these early Christian chapels are influenced by Roman art, and some inscriptions are written in Latin and Greek. Archaeologists have found that the frescos of the famous “Greek Chapel” in the Catacombs of St. Priscilla share a similar art style with Pompeian art. For example, in Christ as the Good Shepherd fresco, Christ is surrounded by three sheep, a representation of the Trinity, and two doves resting on the trees. Sheep and dove are both common symbols in Roman art, and in this case, they were borrowed by the Christians is wrote their own stories and became new types of allegory.

Figure 2. Christ as a Good Sheperd fresco found in the Catacombs of Priscilla

The catacomb is a great treasure that contains numerous stories of the ancient past. Through the archaeological lens, we examine not only the artifacts and the features found in the sites but also relate them to their context and juxtapose them with other sites. The Christians and Romans are not always enemies. Civilizations nourish and learn from each other.

Further Research:

https://www.jstor.org/stable/497187?searchText=Catacomb+archaeology&searchUri=%2Faction%2FdoBasicSearch%3FQuery%3DCatacomb%2Barchaeology&ab_segments=0%2Fbasic_search_gsv2%2Fcontrol&refreqid=fastly-default%3Acffb11bcb73806955146ac838c04695d

References:

Leon, Harry Joshua. “New Material about the Jews of Ancient Rome.” The Jewish Quarterly Review 20, no. 4 (1930): 301–12. https://doi.org/10.2307/1451498.

Frank Korn, Richard Marranca, “The Roman Catacombs: The Labyrinthine City of the Dead.” Popular Archaeology, Jan 14, 2022.

What Feminist Archaeology Reveals about the Lives of Women in El Argar

Meaningful archaeological research occurs when we remove our preconceived notions. Historically, academics assumed women have always been passive and subordinate actors within the political world: this stems from the belief that women are biologically suited for caregiver roles rather than leadership roles (Murr and Zayas 2023). Feminist Archaeology focuses on decentering the Western and male analysis by considering women as active agents within their communities.

Figure 1. Aerial view of the remains of La Almoloya where the El Argar lived and where grave 38 was found. Photograph by the Universitat Autònoma de Barcelona.

The Bronze Age tomb of El Argar, discovered in the Iberian Peninsula in 2014, illustrates the necessity to approach archeology using methodical and empirical observations rather than assumptions. Grave 38 is a mid-seventeenth-century B.C. ceramic jar-like tomb containing two human remains (Lull and Herrada 2021). Pelvic and cranial structures indicated that one was of a woman, aged 25 to 30, and the other was a man, aged 30 to 40. Burial sites are important because they help us understand the values of a culture. The two remains were buried under an elaborate structure, believed to be a political building, indicating they were likely part of the ruling class (Figure 1) (Pinkowski 2021). The woman is adorned with beaded necklaces, rings, hair pins, and a silver diadem (Figure 2). The man has notably fewer possessions and is lying beside a simple dagger.

Figure 2. The silver Argaric diadem from El Argar tomb. Photograph by the Universitat Autònoma de Barcelona.

Without feminist archeology, it would be easy to assume that the female was the romantic partner of a male political figure and that she had been buried with silver jewelry because she was considered beautiful (Geggel 2021). This dismisses her potential importance and prevents us from understanding their social structures more deeply. Grave 38 challenges our previous belief that the women of El Argar were not leaders. When we approach the site from a more neutral and empirical perspective, we see that the female was buried after the death of her partner, indicating that her influence must have extended past his presence. Women generally had more lavish burials than men, indicating their societal importance. The diadem she was buried with is large, extending from her forehead to her nose. It would have been polished to allow those facing her to see their reflection: archeologists believe this was intended to have a threatening effect indicating her authority. A silver awl was buried beside her, indicating she could have been a political leader in the large linen textile industry.

Grave 38 challenges our understanding of El Argar’s social structure. It was previously believed that men were buried with daggers because they played an important role in political decisions (Geggel 2021). However, the location of the tomb and objects buried with the woman disprove such a belief. It is now believed that men of the ruling class were reinforcing political decisions, but women played an essential role in making them. A neutral and feminist approach to examining this site revealed a wealth of information about this society’s social and political structures that would be impossible without approaching archaeology from an empirical perspective.

Further reading

https://www.theguardian.com/world/2021/mar/11/bronze-age-burial-site-in-spain-suggests-women-were-among-rulers

https://www.nationalgeographic.com/history/article/ancient-woman-powerful-european-leader-4000-year-old-treasure-suggests

References

Geggel, Laura. “’Powerful, maybe even frightening’ woman with diadem may have ruled in Bronze Age Spain.” Live Science. March 12, 2021. https://www.livescience.com/diadem-bronze-age-burial-spain.html.

Lull, Vicente et. al. March 11, 2021. “Emblems and spaces of power during the Argaric Bronze Age at La Almoloya, Murcia.” A Review of World Archaeology 95 (380): 329-348. https://www.cambridge.org/core/journals/antiquity/article/emblems-and-spaces-of-power-during-the-argaric-bronze-age-at-la-almoloya-murcia/B27A3C7AD23625DD39C6D4F2C3981C2F.

Murr, Isabel., and Zayas, Elliot. “Engendering the Past: Practices and Potentials of an Explicitly Feminist Archaeology.” Barnard College. (n.d.). https://barnard.edu/engendering-past-practices-and-potentials-explicitly-feminist-archaeology. 

Pinkowski, Jennifer. “She Was Buried With a Silver Crown. Was She the One Who Held Power?” The New York Times. March 11, 2021. https://www.nytimes.com/2021/03/11/science/bronze-age-tomb-women.html

Exploring the World of Underwater Archaeology

Underwater archaeology involves exploring and preserving archaeological treasures submerged in oceans, lakes, and rivers. The emergence of scuba diving in the mid-20th century helped propel the development of underwater archaeology. The submerged sites studied by underwater archaeologists consist of shipwrecks, ancient human remains, and sunken settlements (Blakemore 2021). Some practical challenges and difficulties of underwater archaeology include access to sites, transportation of equipment, weather conditions, specifically the tides and the dynamic nature of water, data interpretation, international and local laws, and the need for skilled divers. LiDAR, sonar, advanced imaging aids, remote sensing devices, advanced photography, and submersibles all aid archaeologists in discovering and documenting submerged sites and artifacts (Blakemore 2021). Forming strong relationships with local communities can be very important for underwater archaeologists because the locals may have valuable knowledge of the waters being explored. For example, local fishers played a crucial role in assisting archaeologists in the discovery of 23 shipwrecks near Fourni, Greece (Blakemore 2021). 

Figure 1. Example of a LiDAR map of Inlet, Virginia.

Learn more about the LiDAR technology: https://oceanservice.noaa.gov/facts/lidar.html#:~:text=Lidar%2C%20which%20stands%20for%20Light,variable%20distances 

One interesting example of an underwater discovery is the identification of submerged DNA in Chios, Greece by archaeologist Brendan Foley and environmental geneticist Maria Hansson. Foley had surveyed a classical shipwreck near the Greek island of Chios but couldn’t identify the cargo. Hansson suggested DNA analysis on the recovered amphorae (Archaeological Institute of America 2009). Amphora is a type of ancient vessel or container, typically made of clay or ceramic, with a distinctive shape. Hansson found genetic traces of olive, oregano, and tree resin, providing direct evidence of the ship’s cargo. Foley and Hansson’s findings provided evidence about the ancient economy. They also demonstrated that, in certain instances, the marine environment can be conducive to DNA preservation (Archaeological Institute of America 2009). This discovery informs fellow archaeologists that conducting DNA analyses in aquatic environments is indeed feasible and can prove a lot about the ancient economy.

Another interesting example of an underwater discovery was in 2013 when a chemical analysis was conducted on an intact, 2,000-year-old Roman medicinal pill discovered in the Relitto del Pozzino, a 2,000-year-old sunken ship off the coast of Tuscany. The shipwreck was located near the Etruscan city of Populonia, a significant Mediterranean Sea trade hub (Mosquera 2019). The excavation, carried out in the 1980s and 90s, uncovered various items, including lamps, glass bowls, bronze jugs, and a medicine chest containing surgical tools, 136 wooden drug vials, and tin vessels with medicinal tablets (Mosquera 2019). These tin vessels remained sealed, preserving the pills. The 2013 chemical analysis revealed that the tablets contained zinc compounds, iron oxide, starch, beeswax, pine resin, and plant-derived materials, suggesting they were used as eye medicine (Mosquera 2019). This discovery and chemical analysis provided valuable evidence and insight into medicinal history.  

Figure 2. Image of tin vessel containing medicinal pills in the Relitto del Pozzino. Photograph by Enrico Ciabatti.

In southern Greece, the site of Pavlopetri, previously explored in the late 1960s, gained renewed archaeological significance in 2009 due to advanced technological methods (Smith 2009). Dating back 5,000 years, Pavlopetri is recognized as the oldest known submerged city. While older underwater settlements exist, Pavlopetri stands out due to its distinct urban characteristics (Smith 2009).

Figure 3. Image of the ruins of the ancient Greek city of Pavlopetri. Photograph by Nikos Pavlakis/Alamy Stock Photo.

Learn more about Palopetri: https://www.theguardian.com/science/2009/oct/16/lost-greek-city-atlantis-myth

The field of underwater archaeology offers new insights and discoveries concerning ancient civilizations, including their economic activities and medical practices. It plays a crucial role in comparing and tracing the evolution of human societies over time.

References: 

Archaeological Institute of America. “Diving into History – The Latest Underwater Discoveries .” Diving into history – the latest underwater discoveries – Archaeology Magazine Archive, 2009. https://archive.archaeology.org/0907/underwater/.

Blakemore, Erin. “Underwater Archaeology Facts and Information.” Culture, May 3, 2021. https://www.nationalgeographic.com/culture/article/underwater-archaeology.

Mosquera, Miguel. “The Five: Underwater Discoveries.” The Guardian, April 7, 2019. https://www.theguardian.com/technology/2019/apr/07/the-five-underwater-discoveries-archaeology-ancient-civilisations-lost-worlds.

Smith, Helena. “Lost Greek City That May Have Inspired Atlantis Myth Gives up Secrets.” The Guardian, October 16, 2009. https://www.theguardian.com/science/2009/oct/16/lost-greek-city-atlantis-myth.

US Department of Commerce, National Oceanic and Atmospheric Administration. “What Is Lidar.” NOAA’s National Ocean Service, October 1, 2012. https://oceanservice.noaa.gov/facts/lidar.html#:~:text=Lidar%2C%20which%20stands%20for%20Light,variable%20distances.

Garbology to the Rescue

Drew Quinn

Garbology to The Rescue

Garbage – the odorous destination for all our tangible items in our society. What many view just as a household staple is, in reality, a significant contributor to understanding nature and our evolving society. Garbage is a hidden treasure box. The archeological study of our garbage is more formally referred to as Garbology. Garbologists study various secondary context items, like products in landfills. Their work provides insight into humankind’s activities such as waste disposal and food consumption. Why is this information so valuable?

As garbologists analyze trash various information is revealed. For example, researchers are able to examine trash and highlight our society’s inadequate job in recycling.  When garbologist discover non-biodegradable plastics and hazardous chemicals in our environment, they are enabled to encourage communities and government officials to make the proper improvements. Additionally, by studying the patterns of our waste generation, garbologists can estimate our overuse of raw materials, energy, and water. With this knowledge, human activities can alter to more sustainable practices. Furthermore, what humans choose to discard reveals much more than one would suspect. For instance, if garbologists see an alteration in the quantity of plant or animal remains discarded, researchers can infer that there has been a change in the ecosystem. Whether it is a decline or increase in these organisms remains, this information grants garbologists the opportunity to stabilize an ecosystem; essential to promoting a healthy environment. 

Figure 1. Landfill, Environmental problem, Waste. Photographed by Ray Van Eng

As our waste decomposes in these landfills greenhouse gases are emitted into the air contributing to our growing climate crisis. Due to the field of garbology, researchers are able to mitigate and help reduce our carbon footprint. For example, expert Claire Parchem shares her experience working at a startup called AMP Robotics. This company programs AI-driven robots that sort waste and recyclables. This artificial intelligence “uses computer vision to recognize patterns of specific recyclable materials within a complex waste stream of smashed, folded, and tattered objects—all combined together”(AMP Robotics 2017). Hence, total waste is reduced by a significant portion, while plastic and reusable waste is put back into circulation. Consequently, both greenhouse gas emissions and waste decomposition decrease. I argue the presence of this beneficial company came into existence thanks to the discoveries in garbology. Similar to AMP Robotics, Glacier has developed technology to improve waste management. Using a similar method Glacier utilizes cutting-edge AI to sort through human-disposed items at an affordable and accessible cost. As garbology continues to undercover humans misgiving towards the environment, powerful technology like AI robots will continue to develop and combat our climate crisis. This upcoming and innovative business sector is seeded in the efforts of garbologists.

Figure 2. AMP Robotics raises $55 million for AI that picks and sorts recyclables. Image Credit AMP Robotics.

Further research- Garbology: Diving into trash at Santa Clara University : NPR

AMP Robotics raises $55 million for AI that picks and sorts recyclables | VentureBeat

Reference list 

“Glacier: Recycling Robots to End Waste,” n.d. https://endwaste.io/.

AMP Robotics. “Latest News — AMP Robotics,” n.d. https://www.amprobotics.com/news.

Discovery of a 1000 Year Old Mummy in Residential Peru

When one considers the anthropological significance of Peru, most likely the mountain dwelling culture of the Incan Empire comes to mind. Sites such as Machu Picchu have garnered most academics’ attention when studying the ancient civilizations of South America. As someone who has gone to Peru and visited Machu Picchu myself, I cannot understate the magnificence of the site and the culture that erected it; however, it is unwise to think that it is the only incredible archaeological discovery in Peru.

Above is one pyramid found at the Huaca Pucllana site, where the mummy was discovered.

On the coast of Peru, a country renowned for its picturesque mountains and valleys, is the capital city of Lima. At first glance it appears, like many other modern South American cities, to have colonial heritage with many of the buildings being remnants of Spanish conquest. However, in the middle of Lima’s affluent Miraflores district lies the Huaca Pucllana site, belonging to the Ychsma culture that occupied the area over a thousand years ago. Recently, a mummy dating back to the beginning of the Ychsma settlement of the area was discovered surrounded by ceramics and textiles. According to the head archaeologist of the site, Mirella Ganoza: “The uncovered mummy lived possibly as long as a millennium ago, at the beginning of the Ychsma culture that developed on the central coast of modern Peru during a period of social reorganization prior to the arrival of the Incas to the area”.

Pictured above is the Huaca Pucllana site found in the middle of the Miraflores district in present day Lima.

This discovery can be interpreted in a few different ways. Firstly, being in the middle of a city, it affects the normative perception of archaeology occurring in remote places. Differing very much from the standard archaeological site that one may think of, this site has been lived over for centuries. It is a drastic difference from the popular culture idea of sites being abandoned or untouched by humanity for many years. Ganoza highlights this in their address to the media stating: “I find it quite interesting that right in the heart of Miraflores, in the middle of the city, surrounded by modern buildings and constructions, an important site is still preserved, the Huaca Pucllana ceremonial center”. If this is the case, is it possible that there are other sites in urban developments that are yet to be found? It is exciting to imagine there are major archeological discoveries yet to be discovered could plausibly be right under our feet.

Beyond the discovery’s future implications of further excavations, it changes the general public’s perception of South American history and Anthropology. The site sheds light on the cultures that tend to be neglected when discussing South American history. The Ychsma, who are credited with building at least 16 pyramids in the area similar to the one the mummy was discovered, are believed to have dominated the central coast of Peru until the rise of the Inca Empire. Drastically different from the story of the Incans, the discovery of Ychsma sites paints a very different picture about the ancient history of Peru and the Andes region. Hopefully, with more discoveries like this we can begin to articulate the stories of lesser known ancient civilizations of the Americas in a manner these fascinating cultures deserve.

References/additional reading:

https://www.reuters.com/lifestyle/archaeologists-unearth-1000-year-old-mummy-peru-residential-neighborhood-2023-09-06/

https://www.washingtonpost.com/world/2023/09/07/peru-mummy-found-ychsma/