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Eyjafjallajökull(ā`yäfyätläyö'kŭtl), glacier, S Iceland, near the coast. Roughly 39 sq mi (100 sq km) in area, it covers an active volcano, 5,466 ft (1,666 m) high, also known by the same name; the volcano's caldera is roughly 1.2–1.6 mi (2–2.5 km) in diameter. Eyjafjallajökull last erupted in 1821–3; its eruptions are known for preceding those of the much larger KatlaKatla,
volcano, 4,961 ft (1,512 m) high, SW Iceland. One of Iceland's most active volcanoes, it is partly buried under the Mýrdalsjökull glacier, which covers its eruptive vents.
..... Click the link for more information. to the east. In 2010 the volcano began erupting again; ash from the eruption posed a hazard to air travel, causing disruption across much of Europe for a time.