These places look alien, but they're actually on Earth.
The bison attack at the national park was the second in three weeks. Both occured near the Old Faithful geyser. Continue reading →
Yellowstone's explosive secrets are uncovered after the discovery and imaging of a deep, gigantic reservoir of hot rock.
The Chilean geyser called El Jefe provides new insight on how these natural wonders work. →
A bizarre sheet of clouds embraced the highest peak in Grand Teton National Park in Wyoming.
Colorful hot springs in Yellowstone National Park get their hues from good-luck coins tossed into their waters and trash discarded by tourists. Continue reading →
Take a tour of some of the most impressive geological features around the world.
Created in 1964, the National Wilderness system now covers about 5 percent of the United States. See National Geographic photographer Michael Melford's photos of current and proposed National Wilderness areas.
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