Downtown Ladybird Lake and Barton Creek Greenbelts.

California's High Sierra Nevada Mountain Wilderness.

California's High Sierra Nevada Mountain Wilderness.

California's High Sierra Nevada Mountain Wilderness.

California's High Sierra Nevada Mountain Wilderness.

Montana's Glacier National Park wilderness.

Colorado's 485 mile wilderness trail from Denver to Durango.

Colorado wilderness along the Continental Divide.

California, Colorado, and Arizona Wilderness.

California, Colorado, and Arizona Wilderness.