Yellowstone is the oldest and best-known national park in the USA. It was established by Act of Congress on March 1, 1872.
It is one of the world’s largest parks covering 8987 sq km of rugged mountains and spectacular deep valleys.
It is situated across Wyoming, Montana and Idaho.
Yellowstone is famous for its lakes and rivers such as Yellowstone Lake and Snake River.
Most of Yellowstone is forested in lodge pole pines, along with other conifers, cottonwoods and aspens. It also has a wealth of wild flowers.
Yellowstone’s wild animals include bison, bighorn sheep, moose, grizzly bears and wolves.
Yellowstone has 10,000 hot springs and 300 geysers, as well as steam vents, mud cauldrons, fumaroles and paint pots.
The most famous geyser is Old Faithful, which spouts every hour or so. The biggest is the 115 m Steamboat.
One of the biggest volcanic eruptions ever occurred in Yellowstone Park two million years ago. Enough lava poured out in one goes to build six Mt Fujiyamas.
There are signs that Yellowstone may soon erupt as a super volcano — an eruption on an unimaginable scale.