NASA Goddard Photo and Video:
Crater Lake National Park
NASA Goddard Photo and Video:
Denali National Park
NASA Goddard Photo and Video:
Badlands National Park
NASA Goddard Photo and Video:
Acadia National Park
NASA Goddard Photo and Video:
Great Sand Dunes National Park and Preserve
NASA Goddard Photo and Video:
North Cascades National Park
NASA Goddard Photo and Video:
Petrified Forest National Park