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Tindfjallajökull from aeroplane.jpg
Highest point
Elevation 1,462 m (4,797 ft)
Coordinates 63°48′N 19°35′W / 63.8°N 19.58°W / 63.8; -19.58Coordinates: 63°48′N 19°35′W / 63.8°N 19.58°W / 63.8; -19.58
Location Iceland
Parent range Mid-Atlantic Ridge
Mountain type Stratovolcano
Last eruption Possibly Holocene

Tindfjallajökull is a stratovolcano in the south of Iceland.[1] It has erupted rocks of basaltic to rhyolitic composition, and a 5-km-wide caldera was formed during the eruption of the 54,000-year-old Thórsmörk Ignimbrite. It is capped by a glacier of 19 km².[2] Its highest peak is Ýmir (1462m),[2][3] which takes its name from the giant Ýmir of Norse mythology. The most recent eruption was at an unknown time in the Holocene.[1]

The name means "Tindfjöll glacier". Tindfjöll ("peak mountains") is a ridge that extends to the south of the glacier.

The rivers that flow from the glacier are Hvítmaga to the north-east, Gilsá to the south, Þórólfsá to the south-west, Valá to the north-west and Blesá to the north. Hvítmaga, Gilsá and Þórólfsá drain into Markarfljót while Valá and Blesá drain into Eystri Rangá.

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