Arenal Volcano is a stratovolcano in north-western Costa Rica, in the province of Alajuela. It is within the Arenal Volcano National Park. The volcano is conically shaped with a height of 1,633 metres (5,358 ft) and a crater with a diameter of 140 metres (460 ft). Arenal is a young volcano, estimated to be less than 7,500 years old. The volcano was dormant for hundreds of years and exhibited 2 craters at its summit, with minor fumaroles activity, covered by dense vegetation. In 1968 it erupted unexpectedly, destroying the small town of Tabacón. Due to the eruption three more craters were created on the western flanks but only one of them exists today. By duration, Arenal's eruption from 1968 to 2010 is the tenth longest volcanic eruption on Earth since 1750. Since 2010, Arenal has been dormant.
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