Prestahnukur

Photo of this volcano
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 64.6°N
  • 20.58°W

  • 1400 m
    4592 ft

  • 371070
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Prestahnukur.

The Global Volcanism Program has no Weekly Reports available for Prestahnukur.

The Global Volcanism Program has no Bulletin Reports available for Prestahnukur.

Eruptive History


Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).


Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
3350 BCE (?) Unknown Confirmed 0 Tephrochronology Sköflungur
6950 BCE (?) Unknown Confirmed 0 Radiocarbon (corrected) Geitlandshraun II
7550 BCE ± 500 years Unknown Confirmed 0 Radiocarbon (uncorrected) Skjaldbreidur

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.

Photo Gallery


The massive subglacial Prestahnukur volcano at the SW end of the Langjökull icecap has associated rift zones to the north and SW that have erupted during the Holocene. The classic Icelandic shield volcano Skjaldbreidur (seen in this photo) was formed at the southern end of the Prestahnukur volcanic system, between Thorsjökull glacier and Thingvallavatn lake. The broad, low-angle shield volcano produced 17 cu km of basaltic lava flows during the early Holocene. Hot springs are associated with the rhyolitic Prestahnukur central volcano.

Photo by Ingibjörg Kaldal (Orkustofunun, courtesy of Richie Williams, U.S. Geological Survey).
See title for photo information.
The classic Icelandic volcano Skjaldbreidur is perhaps the best known of the many small shield volcanoes that were constructed along rift zones where the Mid-Atlantic Ridge rises above sea level. Skjaldbreidur, seen here from the west along route 52, was formed about 9500 years ago during a single long-duration eruption at the southern end of the Prestahnukur volcanic system in central Iceland. The broad, low-angle shield volcano produced 17 cu km of basaltic lava flows and is capped by a small 300-m-wide summit crater.

Photo by Richie Williams, 1981 (U.S. Geological Survey).
See title for photo information.

Smithsonian Sample Collections Database


The following 6 samples associated with this volcano can be found in the Smithsonian's NMNH Department of Mineral Sciences collections. Catalog number links will open a window with more information.

Catalog Number Sample Description
NMNH 115615 Tholeiite
NMNH 117449-11 Perlite
NMNH 117449-15 Perlite
NMNH 117449-16 Obsidian
NMNH 117449-17 Marekanite
NMNH 117449-18 Obsidian

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