{{short description|Mountain in Iceland}} {{more citations needed|date=November 2018}} thumb|right|300px|Borgarvirki thumb|right|300px|View from the top of Borgarvirki '''Borgarvirki''' {{IPA|is|ˈpɔrkarˌvɪr̥cɪ||Borgarvirki pronunciation.ogg }} lies between Vesturhóp {{IPA|is|ˈvɛstʏrˌhouːp|}} and Víðidalur {{IPA|is|ˈviːðɪˌtaːlʏr̥|}} in the north of Iceland, and at 177m above sea level it dominates the surrounding region. Made out of basalt strata, it has been used as a fortress. Borgarvirki is a natural phenomenon, altered by humans in earlier centuries. In 1949, Borgarvirki was renovated by workers who installed a granite lintel at the main entrance.
Borgarvirki is a volcanic plug (gosstapi {{IPA|is|ˈkɔsːˌtʰaːpɪ|}}), and the Icelandic sagas mention that in earlier centuries it was used for military purposes.<ref>[http://www.nat.is/travelguideeng/plofin_borgarvirki.htm Borgarvirki North Iceland<!-- Bot generated title -->] {{webarchive |url=https://web.archive.org/web/20080512164204/http://www.nat.is/travelguideeng/plofin_borgarvirki.htm |date=May 12, 2008 }}</ref> There is a viewing dial inside.
It is accessible to visitors travelling around the peninsula of Vatnsnes.
== See also == * List of columnar basalts in Iceland
== References ==
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== External links == {{Commons category|Borgarvirki}}
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Category:Landforms of Iceland Category:Mountains of Iceland Category:Volcanoes of Iceland Category:Volcanic plugs of Iceland Category:Columnar basalts of Iceland Category:Geomyths Category:Northwestern Region (Iceland) {{iceland-geo-stub}}