50km from Thingvellir is a region full of geothermal geysers and hot springs. The word "geyser" was introduced to the dictionaries, just borrowing the name of an Icelandic geyser "Geysir". Iceland has about 250 sites on which they are hot springs, explodes only about 30 of them. Currently, the most popular is the Strokkur geyser that shoots every 5-8 minutes the water to a height of 30m. The larger source is about 800, and a small few thousand. The average temperature is 75°C. Geysers are quite rare phenomenon, requiring a combination of specific geological and climatic conditions, outside Iceland found only in a few places on Earth. The oldest thermal springs in Iceland have after 10 000 years, and their formation and disappearance governed by earthquakes. After some earthquakes a geyser becomes active, the other dies. It is known for its history of eruptions at a height of over 150 meters and 60 meters eruptions lasting an hour. The pools are filled with thermal water, exceeding even 100 degrees Celsius. Geyser attracts crowds of tourists, everyone who goes to Iceland must see "field of geysers" in the town of Geysir (south-west Iceland).