River flowing along mountains, Colorado River, Grand Canyon, Arizona, USA

River flowing through landscape, Wyoming, USA

River with mountains at dusk, Upper Missouri River Breaks National Monument, Missouri River, Montana, USA

Lake in forest, Wind River Range, Wyoming, USA

Wild flowers blooming in field, Wind River Range, Wyoming, USA

Close-up of Chipmunk, Rocky Mountain National Park, Colorado, USA

Mosses on rocks in river, Denali National Park, Alaska, USA

Road sign on countryroad side, Rocky Mountain National Park, Colorado, USA

People riding horses with mountain in background, Wind River Range, Wyoming, USA

Wild flowers blooming in field near lake, Wind River Range, Wyoming, USA

Person riding horse with mountain in background, Wind River Range, Wyoming, USA

Man and woman riding horses in field, Wind River Range, Wyoming, USA

Snake River, Rocky Mountains, USA