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The front (left) and back (right) of a 3000-year-old copper mask. Small holes near the edges suggest the mask could have been attached with threads. Someone tried to repair the fracture near the left eye—note the holes near it.
The front (left) and back (right) of a 3000-year-old copper mask. Small holes near the edges suggest the mask could have been attached with threads. Someone tried to repair the fracture near the left eye—note the holes near it.
Cortés & Scattolin in Antiquity, 2017

Rainy Season in the Andes Reveals the Oldest Known Copper Death Mask

The front (left) and back (right) of a 3000-year-old copper mask. Small holes near the edges suggest the mask could have been attached with threads. Someone tried to repair the fracture near the left eye—note the holes near it.
The front (left) and back (right) of a 3000-year-old copper mask. Small holes near the edges suggest the mask could have been attached with threads. Someone tried to repair the fracture near the left eye—note the holes near it.
Cortés & Scattolin in Antiquity, 2017

A good downpour can be an archaeologist’s best friend. A recent rainy season in the northwest corner of Argentina revealed an ancient copper mask, green with rust, that had been hidden in the dirt for the last 3000 years. It's the oldest known copper artifact in the Andes—the longest continental mountain range on earth—and one of the oldest metalworks ever found in South America. Its discovery complicates the long-standing idea that metalworking began on the continent in Peru, thousands of miles north.

The mask looks a bit like a Jack-o’-lantern, with a little triangle for a nose and small openings for the eyes and mouth. Residents of the village of La Quebrada stumbled across the mask, as well as some bones, sticking out of the dirt in 2005. Shortly after, archaeologists came in to excavate the site, and they found that the mask wasn’t resting on just one burial, but was covering a collective grave with 14 bodies.

“We don’t know exactly what the actual meaning of the mask was in the context of this pre-Hispanic society,” archaeologist Leticia Inés Cortés, of Argentina’s National Council for Scientific and Technical Research, tells Mental Floss. Ancestor cults are very ancient and widespread in the region, Cortés says, so the mask could be a representation of the ancestor of the group and the rest of their community. Later DNA tests might reveal the relationships between the deceased.

The burial site was located near the 1900-year-old settlement of Bordo Marcial. However, radiocarbon dates showed that the tomb and mask are much older—dating back to 3000 years ago, before any villages even existed in the region.

During this time period, people in the area were just beginning to leave their hunter-gatherer way of life. But even before they truly settled down and started farming, they apparently figured out how to take advantage of the rich copper sources in the region that are still mined today.

Cortés, who described the mask in a new report in the journal Antiquity, tells Mental Floss that there’s been a tendency to treat Peru as the epicenter for technological innovation in the region. This mask, meanwhile, shows “that there is no one place for technological innovation, but many, including this region of the southern Andes.”

In other words, it’s not like a few geniuses in the central Andes figured out how to melt down metal to make beautiful objects and their invention spread from there.

Archaeologists might have previously assumed that cultures only started making fine metal objects when they had elite ruling classes and a capacity to create agricultural surpluses to free up time for skilled workers. But the mask from Argentina also builds on other evidence from the region demonstrating that displays of wealth might pre-date sedentary life.

“The discovery underscores the idea that social complexity—that is, a hierarchical social order—is not required for the emergence of early metal working,” says Mark Aldenderfer, an archaeologist at the University of California, Merced, who wasn’t involved in the study.

Aldenderfer previously discovered the oldest gold artifacts in the Americas, in the form of a necklace dating back to 4000 years in Peru near Lake Titicaca, when people in that region were just starting to settle into villages.

“The circulation of metal artifacts and their interment with the dead suggest that new forms of wealth accumulation and networking began to emerge during this transitional period,” Aldenderfer tells Mental Floss. "I suspect that the copper mask from Bordo Marcial reflects a similar social context."

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The front (left) and back (right) of a 3000-year-old copper mask. Small holes near the edges suggest the mask could have been attached with threads. Someone tried to repair the fracture near the left eye—note the holes near it.
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Stones, Bones, and Wrecks
Buckingham Palace Was Built With Jurassic Fossils, Scientists Find
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iStock

The UK's Buckingham Palace is a vestige from another era, and not just because it was built in the early 18th century. According to a new study, the limestone used to construct it is filled with the fossilized remains of microbes from the Jurassic period of 200 million years ago, as The Telegraph reports.

The palace is made of oolitic limestone, which consists of individual balls of carbonate sediment called ooids. The material is strong but lightweight, and is found worldwide. Jurassic oolite has been used to construct numerous famous buildings, from those in the British city of Bath to the Empire State Building and the Pentagon.

A new study from Australian National University published in Scientific Reports found that the spherical ooids in Buckingham Palace's walls are made up of layers and layers of mineralized microbes. Inspired by a mathematical model from the 1970s for predicting the growth of brain tumors, the researchers created a model that explains how ooids are created and predicts the factors that limit their ultimate size.

A hand holding a chunk of oolite limestone
Australian National University

They found that the mineralization of the microbes forms the central core of the ooid, and the layers of sediment that gather around that core feed those microbes until the nutrients can no longer reach the core from the outermost layer.

This contrasts with previous research on how ooids form, which hypothesized that they are the result of sediment gathered from rolling on the ocean floor. It also reshapes how we think about the buildings made out of oolitic limestone from this period. Next time you look up at the Empire State Building or Buckingham Palace, thank the ancient microbes.

[h/t The Telegraph]

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The front (left) and back (right) of a 3000-year-old copper mask. Small holes near the edges suggest the mask could have been attached with threads. Someone tried to repair the fracture near the left eye—note the holes near it.
©Thomas Jefferson Foundation at Monticello
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Stones, Bones, and Wrecks
Inside the Kitchen of Thomas Jefferson's Acclaimed—and Enslaved—Chef James Hemings
 ©Thomas Jefferson Foundation at Monticello
©Thomas Jefferson Foundation at Monticello

James Hemings once prepared lavish dishes for America's founding fathers at Monticello, Thomas Jefferson's Virginia plantation. Though enslaved, he trained in France to become one of colonial America's most accomplished chefs. Now, archaeologists have uncovered the kitchen where Hemings created his elaborate banquets, LiveScience reports.

Researchers at Monticello are conducting a long-term effort, the Mountaintop Project, to restore plantation premises, including slave quarters, to their original appearance. Archaeologists excavated a previously filled-in cellar in the main house's South Pavilion, where they found artifacts like bones, toothbrushes, beads, and shards of glass and ceramics. Underneath layers of dirt, experts also uncovered the kitchen's original brick floor, remnants of a fireplace, and the foundations of four waist-high stew stoves.

"Stew stoves are the historic equivalent of a modern-day stovetop or cooking range," archaeological field researcher manager Crystal Ptacek explains in an online video chronicling the find. Each contained a small hole for hot coals; centuries later, the cellar floor still contains remains of ash and charcoal from blazing fires. Hemings himself would have toiled over these stoves.

During the colonial period, wealthy families had their slaves prepare large, labor-intensive meals. These multi-course feasts required stew stoves for boiling, roasting, and frying. Archaeologists think that Jefferson might have upgraded his kitchen after returning from Paris: Stew stoves were a rarity in North America, but de rigueur for making haute French cuisine.

Hemings traveled with Jefferson to France in the 1780s, where for five years he was trained in the French culinary arts. There, Hemings realized he was technically a free man. He met free black people and also learned he could sue for his freedom under French law, according to NPR.

And yet he returned to the U.S. to cook for Jefferson's family and guests, perhaps because he didn't want to be separated from his family members at Monticello, including his sister, Sally. He later negotiated his freedom from Jefferson and trained his brother Peter as his replacement. Hemings ended up cooking for a tavern keeper in Baltimore, and in 1801, shortly after turning down an offer from now-president Jefferson to be his personal chef, he died by suicide.

"We're thinking that James Hemings must have had ideals and aspirations about his life that could not be realized in his time and place," Susan Stein, senior curator at Monticello, told NPR in 2015. "And those factors probably contributed to his unhappiness and his depression, and ultimately to his death."

Hemings contributed to early America's culinary landscape through dessert recipes like snow eggs and by introducing colonial diners to macaroni and cheese, among other dishes. He also assisted today's historians by completing a 1796 inventory of Monticello's kitchen supplies—and he's probably left further clues in the estate's newly uncovered kitchen, says Gayle Jessup White, Monticello's community engagement officer—and one of James's relatives.

"My great-great-great-grandfather Peter Hemings learned to cook French cuisine from his brother James on this stove," White tells Mental Floss. "It was a spiritual moment for me to walk into the uncovered remains of Monticello's first kitchen, where my ancestors spent much of their lives. This discovery breathes life into the people who lived, worked and died at Monticello, and I hope people connect with their stories."

[h/t Live Science]

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