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Nevada's Astronaut Training Ground Is An Ancient Volcanic Crater With A Surreal, Moon-Like LandscapeTake 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.
Park Ranger John on MSN2d
Explore California's 28 Epic National ParksWith 28 National parks in California, you can truly find something for everyone to see and enjoy. California National Pa ...
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