The Yellowstone National Park in Wyoming, USA

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Yellowstone Park is a land of heat and vapor, where hot water gushing geysers to astounding heights. In 1872, President Grant declared a national park area of 9000km ², the first in the world. Yellowstone name derives from the name Native Americans gave him the largest river in the region. Yellowstone River has carved the Grand Canyon in the yellow rock that flow down from the lake as a series of impressive cataracts. Here we find natural baths and terraces of calcite called Minerva, which was lined with steaming, and the Fountain Paint boiling mud ponds Can there dissolved minerals which give them all the colors of the rainbow. Minerva Terraces daily make two tons of limestone.

The most popular item is the Yellowstone Park geysers system - amazing Trombe and Old Faithful geyser and punctual, which every 75 minutes gushing boiling up to 60m in the air. Geysers activity is conditioned by three factors: an abundant source of water, a strong heat source and a rock structure to render a natural system of pipes. Heat source is on molten rock, which in Yellowstone is located less than 5 km below the earth's crust. Heavy rain seeps up to 1500 m deep and under pressure, water is heated to above boiling point, rising to the surface. Some of the hot water turns to steam, throwing them into the air above the water column initiates a chain reaction that lead to more and more low pressure superheated water turn into vapor. So keep in geyser eruption to emptying the pipes.

Yellowstone Park there are about 10,000 thermal features. Besides the famous geysers, boiling mud ponds there, jets of sulphurous steam and hot springs, which are often seen emerald or turquoise color, because the algae have adapted to life at such high temperatures. There are almost 60 species of mammals living in the Yellowstone. Here we meet both herds of bison and elk, among many others.

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