The name Geysir itself is derived from the Icelandic verb geysa, "to gush", the verb from Old Norse. Geysir lies in the Haukadalur valley on the slopes of Laugarfjall hill, which is also the home to Strokkur geyser about 50 metres south.
Eruptions at Geysir can hurl boiling water up to 70 metres in the air.A favorite stop along the Golden Circle is the highly active Geysir Hot Spring Area with boiling mud pits, exploding geysers and the lively Strokkur which spouts water 30 meters (100 ft) into the air every few minutes. The newly opened Geysir Center offers exhibits and informative presentations year round.
The area became active more than 1000 years ago and comprises more than a dozen hot water blow holes. Although Geysir is less active these days, it did lend its name to hot springs all over the world.