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Conquistadors like Hernando Cortes in the 1500s searched endlessly for the ancient city and its purported riches. Now modern researchers think they've found itDeep in the rainforest of Honduras' Mosquitia region, archaeologists have discovered what they think might be the remains of La Ciudad Blanca, which, according to legend, is thought to be brimming with gold. But the discovery of the mystical White City is far from Indiana Jones-esque (at least so far) — for example, researchers had to use sophisticated modern technologies from the safety of a plane to pinpoint its location. Here's what you should know:
What exactly is La Ciudad Blanca?Legend has it that the lost city was once full of gold, which is why conquistadors like Hernando Cortes searched far and wide for it in the 1500s. Rumored sightings throughout the centuries "have described golden idols and elaborately carved white stones," hence the White City's namesake, says The Daily Mail. According to folklore, La Ciudad Blanca is the birthplace of the Aztec deity Quetzalcoatl, a serpent-like creature with feathers. Now, researchers think they've honed in on La Ciudad Blanca's precise location.
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How did they find it?Instead of "hacking through forests using machetes," researchers employed a modern day technology called LiDAR, says Innovation News Daily. The technology works like sonar: Quick-burst laser pulses bounce off the ground below at a rate of 100,000 per second. The time it takes for the light to return to the plane tells researchers the altitude points on the ground, allowing them to put together a topographic map through the tree cover.
Why use that technology?LiDAR isn't just cheaper and safer than embarking on expeditions by foot, but it also allows researchers to cover more ground. In 2009, a separate archaeology team from the U.S. used LiDAR to analyze more than 80 square miles of forests in Belize. The technology has been gaining traction ever since.
What did the team actually see in this case?The project, led by Steven Elkins of the National Science Foundation, analyzed three areas considered promising. Engineers flew over 60 square miles of forest in Honduras' Mosquitia region and beamed that data back to Elkins, who worked from an outpost thousands of miles away in West Virginia. After looking at the data for five minutes, he spotted what appeared to be human-made structures. Honduran archaeologists confirmed that they were in fact man-made.
What's next?Elkins will make the trek by foot to evaluate the structures. "That journey will not be an easy one," says Kraig Becker at Gadling, but what he finds will likely "be a fabulous discovery, with or without the gold."
Is LiDAR the future?It certainly seems like it. Equipping robotic drones with LiDAR, for example, could help map unexplored regions of the Arctic, or even be used to assess conditions after earthquakes or hurricanes. In theory, says LiDAR engineer Bill Carter, these systems could be used to "map the entire Earth."
Sources: Daily Mail, Gadling, Innovation News Daily
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