Mike Graf

Arches and Canyonlands National Parks: In the Land of Standing Rocks

Olympic National Park: Touch of the Tide Pool, Crack of the Glacier

Grand Canyon National Park: Tail of the Scorpion

Yellowstone National Park: Eye of the Grizzly

Glacier National Park: Going to the Sun

Great Smoky Mountains National Park

Acadia National Park: Eye of the Whale

Bryce Canyon and Zion National Parks: Danger in the Narrows

Grand Teton National Park: To the Top of the Grand

Rocky Mountain National Park: Peril on Longs Peak

Mount Rushmore, Badlands, Wind Cave: Going Underground

Yosemite National Park: Harrowing Ascent of Half Dome