Yellowstone National Park

Emerald Pool. Geyser Country with Thermal Areas and Boiling Water. Yellowstone National Park, ... rel=
Emerald Pool. Geyser Country with Thermal Areas and Boiling Water. Yellowstone National Park, Wyoming, USA.
© WWF / Fritz PÖLKING

Home to the biggest and the most geysers in the world

What and where
Situated in the northwest corner of the Wyoming frontier, Yellowstone is a treasure that inspires awe in travelers from around the world, boasting more geysers (about 250 active geysers from amidst 10,000 total thermal features) than anywhere else on the globe.

Situated atop a huge volcanic basin, Yellowstone is home to thousands of active thermal features, including the world renowned Old Faithful Geyser as well as the largest active geyser in the world, Steamboat Geyser in the Norris Geyser Basin. It is the core of the Greater Yellowstone Ecosystem, one of the largest intact temperate zone ecosystems remaining on the planet.

Yellowstone is also known for the spectacular Grand Canyon of the Yellowstone, which is 365 m (1,200 ft) deep and highlighted by the powerful Lower Falls. It is also pristine mountain-range wilderness and an open refuge for wildlife, including grizzly bear, elk, American bison, moose and wolf. In recent decades, it has been recognized that Yellowstone and the surrounding area are a biological unit, which is referred to as the Greater Yellowstone Area.

The park received its name from its location at the headwaters of the Yellowstone River. The major feature of the Yellowstone Plateau is the Yellowstone Caldera; a very large caldera which has been nearly filled-in with volcanic debris and measures (50 by 60 km/30 by 40 miles).

Within this caldera lies most of Yellowstone Lake, which is the largest high-elevation lake in North America, and 2 resurgent domes, which are areas that are uplifting at a slightly faster rate than the rest of the plateau.

Why
Geysers, hot springs, a grand canyon, forests, wilderness, wildlife and even a large lake can all be found inside the park. Due to the park's diversity of features, the list of activities for visitors is nearly endless.

Yellowstone National Park is America's first and foremost national park, drawing over 3 million visitors yearly. Established in 1872 by the United States Congress, it now encompasses 2.2 million acres. Yellowstone celebrates its 135th anniversary in 2007.

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