Rocky Mountain National Park
       
     
Canyonlands National Park
       
     
Yosemite National Park
       
     
Acadia National Park
       
     
Joshua Tree National Park
       
     
White Sands National Monument
       
     
Arches National Park
       
     
Saguaro National Park
       
     
Grand Canyon National Park
       
     
Yellowstone National Park
       
     
Mount St. Helens National Volcanic Monument
       
     
Rocky Mountain National Park
       
     
Rocky Mountain National Park

Colorado

Canyonlands National Park
       
     
Canyonlands National Park

Utah

Yosemite National Park
       
     
Yosemite National Park

California

Acadia National Park
       
     
Acadia National Park

Maine

Joshua Tree National Park
       
     
Joshua Tree National Park

California

White Sands National Monument
       
     
White Sands National Monument

New Mexico

Arches National Park
       
     
Arches National Park

Utah

Saguaro National Park
       
     
Saguaro National Park

Arizona

Grand Canyon National Park
       
     
Grand Canyon National Park

Arizona

Yellowstone National Park
       
     
Yellowstone National Park

Wyoming

Mount St. Helens National Volcanic Monument
       
     
Mount St. Helens National Volcanic Monument

Washington