Yellowstone Park

Yellowstone National Park  was the first national park in the U.S. and is also widely held to be the first national park in the world. 
^{The park is known for its wildlife and its many geothermal features, especially Old Faithful geyser, one of its most popular features. It has many types of ecosystems, but the sub-alpine forest is the most abundant. It is part of the South Central Rockies forests.
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Location  : Yellowstone National Park  is an American national park located     
in Wyoming, Montana, and Idaho.

Range :    An area of 3,468.4 square miles (8,983 km²)

Natural structure  :   Comprising lakes, canyons, rivers and mountain ranges.

Yellowstone Lake is one of the largest high-elevation lakes in North America

 and Half of the world's geysers hydro thermal features are in Yellowstone,

Geysers	Lake
Canyon	Mountain Range

Geology :  Columnar basalt near Tower Falls; large floods of basalt and other lava types preceded mega-eruptions of super heated ash and pumice.
After the eruption  of earth  during Pliocene (2.1 million years ago), Yellowstone became a volcano. A combination of forming events like flowing lava, pyroclastic flows, volcanic eruptions, caldera  and earthquakes would changing the Yellowstone landscape.