Strokkur (meaning The Churn in Icelandic) is a geyser in the Haukadalur valley in southern Iceland.

Strokkur is only a few metres away from Geysir, the original geyser. However, unlike Geysir which erupts infrequently and may be dormant for years at a time, Strokkur erupts very reliably every 5-10 minutes, hurling boiling water to heights of up to 20 metres.

Strokkur eruption sequence

#1	#2
#3	#4
Strokkur geyser, part of the Geysir geyser complex, in eruption