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Nevada's Astronaut Training Ground Is An Ancient Volcanic Crater With A Surreal, Moon-Like Landscape
Take a road trip through Nevada to this moon-like crater used by NASA astronauts as a training ground to prepare them for the lunar landscape.
Upheaval Dome: Utah’s Mysterious Crater That Still Puzzles Scientists
The origin of Upheaval Dome in Utah remains debated, with theories ranging from a meteorite impact to underground salt ...