The Bubble (PiP)

Strokkur geyser erupts about every 10 minutes to a height of ca. 20m (see inset clickable photo).
It lies in an area of silica sinter deposit in Haukadalur geothermal field, the remnant of Geysir volcanic system which consists of a basaltic central volcano and rhyolitic lava domes on the southern end of Langjökull fissure swarm.
The big Geysir (which gave all geyers its name) is nearby and has erupted twice already this year after a long dormancy- it seems things are hotting up;-)