Arches National Park
Canyonlands National Park
Bryce Canyon National Park
Grand Teton National Park
Zion National Park
Capitol Reef National Park
Grand Canyon National Park
Yosemite National Park
Rocky Mountain National Park
Platt National Park
Chickasaw National Recreation Area
tor
Teton Range
Katmai National Park
Katmai National Park and Preserve
Mount Rainier National Park
Badlands National Park
scree
slide
broogh
basin
Voyageurs National Park
bluff
Mesa Verde National Park
rockfill
Shenandoah National Park
Kings Canyon National Park
rockscape
North Cascades National Park
ditchside
brew
scaur
precipice
Wind Cave National Park
divide
Rock Springs
San Juan Mountains
bund
moel
Thomomys bottae
valley pocket gopher
counterscarp
Grand Canyon
Crotalus lepidus
rock face
cliffscape
rock rattlesnake
Big Bend National Park