structural:expansion, information:classification
Strokkur is a fountain-type geyser located in a geothermal area beside the Hvítá River in Iceland in the southwest part of the country, east of Reykjavík. It typically erupts every 6–10 minutes. Its usual height is 15–20 metres (49–66 ft), although it can sometimes erupt up to 40 metres (130 ft) high.