In the depths of drought, the past reveals itself. Last year, Texas’ Dinosaur Valley State Park uncovered 113-million-year-old dinosaur footprints—tracks that had long been hidden beneath the waters of the Paluxy River.

These massive prints, left by a towering 15-foot, seven-ton giant, offer a rare glimpse into a prehistoric world. But Texas wasn’t the only place where history surfaced—falling water levels across the globe revealed ancient relics, from a Spanish Stonehenge to sunken German warships still armed with explosives.

What else lies hidden beneath the surface, waiting to be uncovered?