Geology / Energy in Iceland

Iceland is an active volcanic area with frequent eruptions from well known volcanoes such as Hekla, Katla and Krafla. Thirty volcanoes have erupted in the past two centuries and some of the most recent ones are the eruptions in the Westmann Islands in 1973 and Surtsey Island which emerged from the sea in 1963.
Iceland is also a hot spot of geothermal activity. Natural hot water supplies most of the population with inexpensive, pollution-free heating. Rivers, too, are harnessed to provide hydroelectric power. Over 90% of homes are heated by hot springs, which also keep greenhouses warm.