Snæfellsjökull is a 700,000-year-old stratovolcano with a glacier covering its summit in western Iceland. The name of the mountain is actually Snæfell, but it is normally called "Snæfellsjökull" to distinguish it from two other mountains with this name. It is situated on the most western part of the Snæfellsnes peninsula in Iceland. Sometimes it may be seen from the city of Reykjavík over the bay of Faxaflói, at a distance of 120 km.The mountain is one of the most famous sites of Iceland, primarily due to the novel Journey to the Center of the Earth (1864) by Jules Verne, in which the protagonists find the entrance to a passage leading to the center of the earth on Snæfellsjökull.
The mountain is included in the Snæfellsjökull National Park (Icelandic: Þjóðgarðurinn Snæfellsjökull).
In August 2012 the summit was ice-free for the first time in recorded history.The stratovolcano, which is the only large central volcano in its part of Iceland, has many pyroclastic cones on its flanks. Upper-flank craters produced intermediate to felsic materials, while lower-flank craters produced basaltic lava flows. Several holocene eruptions have originated from the summit crater and have produced felsic material. The latest eruption took place 200 AD ± 150 years, and erupted approximately 0.11 cubic kilometres (0.026 cu mi) worth of volcanic material. The eruption was explosive and originated from the summit crater, and may have produced lava flows.
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