Cascade Lake and Observation Peak Trails, Yellowstone National

Cascade Lake and Observation Peak trails, Yellowstone NP - 5.5 mile route across floral meadows past a backcountry lake, then up open slopes to an isolated summit in the Washburn Range

Cascade Lake and Observation Peak Trails, Yellowstone National Park, Wyoming

Observation Peak Trail Hiking Trail, Canyon Village, Wyoming

Cascade Lake Trail, Park County

The American Southwest - Archive of New Articles

15 BEST Hikes in Yellowstone National Park (Honest Trail Guide)

The American Southwest - Archive of New Articles

The Norman MacLean fire lookout tower at Grave Peak, Idaho

The Best Hiking Trails in Every National Park - Outside Online

Avalanche Peak