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![](http://upload.wikimedia.org/wikipedia/commons/thumb/6/63/Strokkur_geyser_eruption%2C_close-up_view.jpg/640px-Strokkur_geyser_eruption%2C_close-up_view.jpg)
Photo credit: Andreas Tille
Geysers erupt periodically due to surface water being heated by geothermal heat.
Photo credit: Andreas Tille
Geysers erupt periodically due to surface water being heated by geothermal heat.