Öraefajökull is Iceland's highest peak at 2119m.
It is located at the SE end of the Vatnajökull icecap.
A 4 x 5 km subglacial caldera truncates the summit of the
composite basaltic and rhyolitic volcano.
It was mostly constructed during Pleistocene glacial and interglacial
periods.
A major silicic eruption in 1362 AD was Iceland's largest
historical explosive eruption.
It and another eruption during 1727-28 were accompanied by
major floods called jokulhlaups.
The stamp illustrated below was issued in 2007.
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