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Geological formations in the cave and a light-colored band on the bridge, which researchers explained to Vice would loosely ...

After analyzing a submerged bridge found in a Spanish cave, researchers have determined that humans inhabited the area earlier than previously thought. When you purchase through links on our site ...

The bridge has been rotting away ... the gates would then create a giant bathtub that could hold up to 160 million gallons of water as the tide rises. The water can then be released or pumped ...