Wikipedia:POTD column/May 17, 2006

Vatnajökull (IPA: [ˈvahtnajœːkʏtl ̥]), the largest glacier in Iceland, is located in the southeast and covers more than 8% of the country. The lakes on the glacier known as Grímsvötn, pictured here, are caused by volcanic eruptions which melt enough ice to fill the Grímsvötn caldera with water.

Photo credit: Roger McLassus
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