Askja

largest caldera (volcanic crater) in the Dyngjufjöll volcanic massif, in east-central Iceland. It lies 20 miles (32 km) north of Vatnajökull, the ...
Found on http://www.britannica.com/eb/a-z/a/113

Askja

Askja (äs'kyä) , volcano, c.4,950 ft (1,510 m) high, E central Iceland; one of the highest in Europe. Its great eruption of 1875 devastated a large area; Askja last erupted in 1961. Askja caldera, surrounded by mountains of tuff, contains Öskjuvatn, a crater lake c.550 ft (170 m) ...
Found on http://www.infoplease.com/ce6/world/A0805020.html

askja

caldera(s)
Found on http://pubs.usgs.gov/of/1995/of95-807/geoicelandic.html
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