The crater Kerið was formed about 6,500 years ago and lies at the northern end of a row of craters known as Tjarnarhólar. It is oval, about 270 m long, 170 m wide and 55 m deep: the depth of the water at the bottom varies between 7 and 14 m. According to an old [...]

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Vulcanologists used to class Kerið as an explosion crater. Explosion craters are formed in explosive eruptions, which sometimes leave deep craters. However, deeper studies of the Grímsnes area have not revealed the existence of any ash deposits that could be traced to an explosive eruption in Kerið andi t is now believed that it was [...]

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