Seasons & Episodes
Pacific Crest Trail
The Pacific Crest Trail zigzags some 2,650 miles from Mexico to Canada . It cuts through seven national Parks and 24 nat
Appalachian Trail
For more than half of the U.S. population, the Appalachian Trail is less than a day's drive away. Yet despite its proxim
Death Valley
It is the driest place in the U.S, with some of the hottest temperatures ever recorded. To forecast how global warming c
Grand Canyon
It is one of Earths few landforms visible from space, a World Heritage site, and one of Americas most popular National P
Hidden Hawaii
Far in the Pacific, 250 miles from Honolulu, a hidden wilderness teems with life ... the Northwestern Hawaiian Islands.
Secret Yellowstone
Life-changing encounters with the natural world await you off-road and beyond the tourist spots in a Yellowstone you've
Secret Yosemite
Scale the largest granite monolith on Earth, see the tallest waterfall in North America, and touch a giant sequoia, the
The Everglades
Discover this unique and threatened ecosystem, including carnivorous plants, amphibious birds, fish that breathe air and
Canyonland
The stark appearance of Canyonlands conceals life in unexpected places.
Glacier National Park
A new wilderness emerges in Glacier National Park as the ice melts.
Extreme Alaska: Denali National Park
Join National Geographic as we trek between low and high country to experience big game deep in the taiga forest, beauti
Pacific Crest Trail
Glacier National Park
Popular Cast
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