Torfajökull
Overview
 
Torfajökull is a rhyolitic stratovolcano
Stratovolcano
A stratovolcano, also known as a composite volcano, is a tall, conical volcano built up by many layers of hardened lava, tephra, pumice, and volcanic ash. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile and periodic, explosive eruptions...

 and complex of subglacial volcano
Subglacial volcano
A subglacial volcano, also known as a glaciovolcano, is a volcanic form produced by subglacial eruptions or eruptions beneath the surface of a glacier or ice sheet which is then melted into a lake by the rising lava...

es, located north of Mýrdalsjökull
Mýrdalsjökull
Mýrdalsjökull mire dale glacier" or " mire valley glacier") is a glacier in the south of Iceland. It is situated to the north of Vík í Mýrdal and to the east of the smaller glacier Eyjafjallajökull. Between these two glaciers is Fimmvörðuháls pass. Its peak reaches in height and in 1980 it covered...

 and south of Þórisvatn Lake
Þórisvatn
Þórisvatn, is the largest lake of Iceland, situated at the south end of Sprengisandur highland road within the highlands of Iceland.It is a reservoir of a surface about 88 km² and uses the energy of the river Þjórsá, which comes down from the glacier Hofsjökull. Here in the south, it is exploited...

, Iceland
Iceland
Iceland , described as the Republic of Iceland, is a Nordic and European island country in the North Atlantic Ocean, on the Mid-Atlantic Ridge. Iceland also refers to the main island of the country, which contains almost all the population and almost all the land area. The country has a population...

. Torfajökull last erupted in 1477 and consists of the largest area of silicic
Silicic
Silicic is a term used to describe magma or igneous rock rich in silica. The amount of silica that constitutes a silicic rock is usually put at at least 65 percent. Granite and rhyolite are typical silicic rocks....

 extrusive rocks in Iceland.
According to legend, the glacier is named for Torfi Jónsson í Klofa, an Icelandic historical figure. When the plague arrived in Iceland in 1493, Torfi fled with his family and his belongings into the highlands and settled in a valley surrounded by the glacier.

According to another legend, the glacier is named for Torfi, a farm worker at a nearby farm.
 
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