Several volcanic centers, active and extinct, are located within Iceland. One of them is the Hengill volcanic center, which lies on the plate boundary between the North American and the European crustal plates in southwestern Iceland. The rifting of the two plates has opened a north‐northeast‐trending system of normal faults with frequent magma intrusions. The Hengill central volcano and its transecting fissure swarm, extending 70–80 km long from the coast south of Hengill to north of Lake Thingvallavatn with an associated graben structure, form the Hengill volcanic system. The Hengill central volcano is currently active and is the main volcanic...

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