Hot springs geyser Yellowstone National Par

Location: Yellowstone National Park. Wyoming. US

Yellowstone National Park is home to some 10,000 thermal features, over 500 hundred of which are geysers. In fact, Yellowstone contains the majority of the worlds geysers.

These geothermal areas are generally near volcanoes that have been active in the past, or are still active. The magma, which is quite close to the surface, heats the underground water, raising to the surface creating geysers and hot springs.

If the water has a easy way out to the surface, the result is a hot spring. A geyser is created when the vents and underground pipes happen not to be wide enough and the temperature and water pressure builds up beneath the ground, causing an eruption of hot water and steam.

The vivid colors of the hot springs are the result of pigmented bacteria in the microbial mats that grow around the edges of the mineral-rich water. The bacteria produce colors ranging from green to red.

The deep blue color of the water in the center of the pool results from the intrinsic blue color of water, itself the result of water's selective absorption of red wavelengths of visible light.

Here you can see other cool photographs of Yellowstone

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