4 Amazing Archaeological Discoveries Spotted by Satellite

Martin Bernetti/AFP/Getty Images
Martin Bernetti/AFP/Getty Images

Since human flight was first possible, aerial archaeology has assisted researchers in uncovering previously unknown sites that are imperceptible from the ground. Today, thanks to advanced technology, remote sensing has moved higher above the Earth: Aerial archaeology is now sometimes space archaeology. By examining maps of the planet's surface taken from space, laptop-based Indiana Joneses can search vast areas for anomalies that could indicate evidence of the human past hidden for centuries. Below are four amazing archaeological discoveries spotted from space.

1. 3100 SETTLEMENTS, 1000 LOST TOMBS, AND 17 PYRAMIDS ACROSS EGYPT

Tanis ruins
Michael Lusk, Flickr // CC BY-NC 2.0

Sarah Parcak is a space archaeologist and Egyptologist who since 2003 has discovered numerous archaeological sites across Egypt, all through her computer. Parcak specializes in analyzing satellite images taken from 400 miles overhead, processing the pictures to highlight parts of the electromagnetic spectrum the naked human eye cannot see. This allows her to note anomalies that could denote archaeological sites hidden underground.

It is highly specialized work. The tiny blips on the maps would mean nothing to the uninitiated, but to Parcak they provide clues that have led her to discover the location of 17 potential pyramids, some 3100 settlements, and 1000 lost tombs across Egypt. Parcak also used remote sensing to identify the location of the lost city of Tanis, which gained notoriety when it was featured in Raiders of the Lost Ark. The network of streets and houses of Tanis are completely invisible at ground level, and yet using infrared satellite images, Parcak was able to show the massive extent of the ancient settlement.

Parcak gave a hugely popular TED talk on space archaeology in 2012, and in 2015 was awarded the 2016 $1 million TED prize. She's used the money to create the citizen science platform GlobalXplorer, which allows anyone to analyze images from space in order to discover more lost archaeological sites across the globe—and spot evidence of looters.

2. THE FINAL DAYS OF THE MAYAN CIVILIZATION

Temple IV in Tikal mayan ruins
Guillén Pérez, Flickr // CC BY-ND 2.0

The heavily forested Petén region of northern Guatemala is home to some of the most important Maya ruins in Central America, including Tikal. Archaeologists have been working with NASA using remote sensing to examine the Petén jungle from space in the hope of identifying lost sites associated with the Maya, whose culture reached the height of its power and influence from the 7th to the 9th centuries—and then collapsed around the turn of the 10th century.

In order to gain a greater understanding of this collapse, Tom Sever, the first archaeologist to work for NASA, has been analyzing images taken from an agency satellite program known as SERVIR which was launched from Marshall Space Flight Center in Huntsville, Alabama in 2005. Sever has used the images to further his theory—one also promoted by Jared Diamond in his popular book Collapse but not accepted by all Maya scholars—that what brought down the Maya was self-induced ecological disaster. The images indicate that the Maya used slash-and-burn agricultural practices that led to severe deforestation. They also drained the wetlands known as bajos, as evidenced by images of ancient drains, causing drought and resulting in an increase in temperature. The fate of the Maya is now often held up as a prime example of the risk of deforestation and climate change.

3. HOW AND WHERE THE EASTER ISLAND MOAI WERE MOVED

moaisin the hillside of the Rano Raraku volcano in Easter Island
Martin Bernetti/AFP/Getty Images

The iconic statues on Easter Island have fascinated archaeologists since they were first noted by a Dutch explorer in 1722. But the biggest mystery is how the Rapa Nui managed to transport these enormous monoliths from the quarries where they were made to numerous sites across the island without the help of large animals or cranes.

In 2012, Carl Lipo of California State University and Terry Hunt of the University of Hawaii used satellite imagery to trace the ancient path of the stones from the quarry to various points around the island, identifying seven major roads [PDF]. The discovery of these routes led Lipo and Hunt to suggest that the upright statues might have been “walked” to their destinations, using ropes to tilt and turn the monoliths into motion. To test out their theory, the National Geographic Society’s Expeditions Council funded an experiment in which a concrete 10-foot, 5-ton copy of a moai was constructed. Using strong ropes, 18 people were able to fairly easily walk the massive statue a few hundred yards.

4. THE LOST CITY OF IRAM/UBAR

the lost city of ubar ruins

Five thousand years ago, a grand city in the deserts of Oman formed the center of the valuable frankincense trade. Known as Iram or Ubar, the legendary city was mentioned in both the Koran and The Thousand and One Nights (a.k.a. The Arabian Nights). Yet no modern trace of this once great city could be found. Notable explorer T. E. Lawrence ("Lawrence of Arabia") referred to it as “the Atlantis of the sands,” and some historians began to doubt it had ever existed. The mystery of the lost city was sufficiently tantalizing to attract the notice of NASA, who agreed to scan the area with a shuttle radar system after being approached by filmmaker and explorer Nicholas Clapp.

A Challenger space mission in 1984 provided the perfect opportunity to scan the desert of Oman from space, searching for geological features hiding under the sand. The resultant pictures revealed ancient caravan routes, which would have been packed down over hundreds of years by the camel trains traveling between trade hubs, the intersections of these roads providing clues as to potential locations for a city. Using this information, archaeologists began to dig at promising locations, and in 1991 Clapp and his team uncovered a many-towered fortress (like that described in the Koran), which would have been the home of the king and hub for the storage of frankincense. This led them to believe that they had finally uncovered the lost city of Ubar.

Ancient sources claimed that the city had disappeared into the Earth after its citizens angered Allah with their lavish and sinful way of life. Evidence from the site in Oman suggests that the destruction of the city occurred due to the appearance of a giant sinkhole, explaining how this once great city was lost to the sands.

A WWII Navy Submarine, Lost for 75 Years, Has Been Discovered Off the Coast of Japan

MR1805/iStock via Getty Images
MR1805/iStock via Getty Images

The U.S. Navy lost 52 submarines during World War II, many of which are still missing today. But as The New York Times reports, the wreck of the U.S.S. Grayback—a submarine that disappeared along with its 80-person crew in 1944—has been found off the coast of Okinawa, Japan.

On January 28, 1944, the Grayback departed from Pearl Harbor for its 10th combat patrol. It missed its scheduled return date that spring, and after weeks of failing to locate the vessel, the Navy declared it was likely lost.

Immediately following World War II, the U.S. military studied Japanese war records in search of clues that might lead them to their missing ships. One recording clearly states the Grayback was brought down by a bomb dropped by an Japanese aircraft, and it even gives the longitude and latitude of the attack. But due to a poor translation of the audio, the Navy went looking for the sub 100 miles away from its actual resting place.

Seventy-five years later, the submarine's coordinates were finally uncovered in old Imperial Japanese Navy files.

A Japanese researcher named Yutaka Iwasaki noticed this error while looking at the World War II records of the Imperial Japanese Navy base at Sasebo. He was asked to review the files for the Lost 52 Project, an organization dedicated to finding lost World War II submarines. Using the newly uncovered information and an autonomous underwater vehicle, the team was able to locate the vessel at the bottom of the East China Sea near Okinawa.

Lost 52 doesn't hunt for submarine wrecks with plans to recover them. Rather, the goal of the project is "documenting and preserving the story of the Lost 52 WWII Submarines, leaving a foundation of knowledge for future generations." In the case of the Grayback, the site where it settled on the seafloor will be protected from any human interference.

[h/t The New York Times]

Swedish Divers Just Discovered Two Shipwrecks That Might Be Related to the Famous Vasa Warship

The Vasa shipwreck displayed in Sweden's Vasa Museum.
The Vasa shipwreck displayed in Sweden's Vasa Museum.
Christian Lundh, Flickr // CC BY-NC 2.0

In 1625, King Gustavus II Adolphus of Sweden commissioned shipbuilders to create the most beautiful, lethal flagship that ever existed, as a symbol of Sweden’s naval strength. Three years later, crowds gathered to watch the Vasa, named after Sweden’s royal house, set sail for the first time. But less than a mile into its maiden voyage, the poorly and hastily constructed warship sunk to the bottom of the Baltic Sea, where it remained until 1961 when it was salvaged and later transported to the Vasa Museum.

Now, the Guardian reports Swedish maritime archaeologists from Vrak—Museum of Wrecks have located two shipwrecks in the Swedish archipelago outside of Vaxholm that could be linked to the Vasa. This is because the shipwright responsible for the Vasa built three other ships, the Äpplet, the Kronan, and the Scepter (though, unlike their ill-fated sibling, they actually made it into battle).

“It was like swimming around the Vasa ship,” maritime archaeologist Jim Hansson said in a museum press release. They believe the first wreck they discovered may be the Äpplet, and the second wreck could be either the Kronan or the Scepter.

“We think that some of them were sunk in the area,” Patrik Hoglund, another Vrak archaeologist, told the Guardian. But these ships didn’t capsize because of shoddy engineering or even an enemy attack. Instead, experts believe the Swedish navy intentionally sunk them after they were decommissioned, so their wrecks would function as surprise spike strips to damage approaching enemy ships.

The divers brought back wood samples from the wrecks to send to a laboratory for testing. Once they know when and where the timber came from, they can cross-reference the data with Swedish archives to find out if it matches information from the Vasa.

Even if the warships do turn out to be the Vasa’s long-lost siblings, it’s unlikely that they’ll be salvaged and displayed alongside it, since the Baltic Sea’s brackish waters actually preserve them much better than a museum could.

Sweden isn’t the only nation that boasts a beautiful shipwreck or two—here are 10 other shipwrecks around the world that you can visit.

[h/t The Guardian]

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