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Thridrangaviti Lighthouse

Coordinates: 63°29′20″N 20°30′47″W / 63.48883°N 20.51317°W / 63.48883; -20.51317
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Thridrangar Lighthouse, Southern Iceland, sits atop the tallest of three sea stacks.

Þrídrangaviti Lighthouse (transliterated as Thridrangaviti) is a lighthouse 7.2 kilometres (4.5 miles) off the southwest coast of Iceland, in the archipelago of Vestmannaeyjar. It is often described as one of the most isolated lighthouses in the world.[1][2] Þrídrangar means "three rock pillars", referring to the three named sea stacks at that location: Stóridrangur (on which the lighthouse stands), Þúfudrangur, and Klofadrangur.[3] It was constructed in 1938 and 1939, with the lighthouse commissioned on July 5, 1942.[4] It was originally built by hand without machinery, and accessible only by scaling the tallest of the three rocky stacks, whose top is 36.576 metres (120 ft) above the sea.[1] A helipad for helicopter access was added in the 1950s.[5]

Technical characteristics:

  • The lighthouse building is situated about 30 metres (98 ft) above the sea [1]
  • The building is 4 metres (13 ft) square concrete whitewashed single-story hut, with a roof that resembles a battlement on a medieval castle tower, including embrasure-like openings. The red lantern sits on the roof and is 4 metres (13 ft) high.[1][6]
  • The light is 34 metres (112 ft) above the sea (it's focal plane), which determines the "height of sight",[7] meaning the light beam is first visible at sea level from 16.7 kilometres (9.0 nautical miles; 10.4 miles).[1][6][dubiousdiscuss]
  • The beam is a long white flash followed by a short white flash every 30s.[6]
  • The lighthouse Admiralty No. is L4802[6]cf. List of lighthouses in Iceland

The lighthouse was built under the direction of Árni G. Þórarinsson, who recruited experienced mountaineers to scale the sea stack. Their climbing tools did not allow them to bite into the rock near the top, and there were no handholds, so they made a 3-person human stack - one man on his knees, a second atop him, and a third one climbing on the second one - for the final pitch.[8][9] According to Þórarinsson:

The first thing we had to to was create a road up to the cliff. We got together of experienced mountaineers, all from the Westman Islands. Then we brought drills, hammers, chains and clamps to secure the chains. Once they got near the top there was no way to get any grip on the rock so one of them got down on his knees, the second stood on his back, and then the third climbed on top of the other two and was able to reach the nib of the cliff above. I cannot even tell you how I was feeling whilst witnessing this incredibly dangerous procedure.[8]

The Icelandic band KALEO released a music video recorded on the helipad, on 5 July 2020, the light's 78th anniversary and soon after the start of COVID when the public was isolating.[4] [5][10]

References

  1. ^ a b c d e "Þrídrangaviti lighthouse". TheWanders.eu. November 29, 2020.
  2. ^ "Iceland's Loneliest Lighthouse". Atlas Obscura. Retrieved 2022-08-08.
  3. ^ "Incredible location for a lighthouse perched on a rock in Iceland's wild surf". Iceland Monitor. Retrieved 2022-08-08.
  4. ^ a b "KALEO releases incredible live performance for "Break my Baby" at Þrídrangar". IcelandMusic. 9 February 2021. Retrieved 2023-11-25.
  5. ^ a b "Islandský maják Þrídrangaviti". Kabinet Kuriozit (in Czech). 25 May 2021. Retrieved 2023-11-25.
  6. ^ a b c d Rowlett, Russ. "Lighthouses of East and South Iceland". The Lighthouse Directory. University of North Carolina at Chapel Hill. Retrieved 2023-11-27.
  7. ^ In the context of lighthouses, "height of sight" refers to the elevation at which a lighthouse's light can first be seen from sea level.
  8. ^ a b "The Most Isolated Lighthouse in the World". History Daily. 17 December 2017. Retrieved 2023-11-25.
  9. ^ Chen, Justine (2020-02-26). "Thridrangaviti Lighthouse: The Perfect Place To Survive Any Pandemic". Elite Readers. Retrieved 2022-08-08.
  10. ^ KALEO (5 February 2021) [5 July 2020]. Break My Baby (Music video). Þrídrangaviti Lighthouse, Iceland. Archived from the original on 2021-02-21 – via YouTube.

63°29′20″N 20°30′47″W / 63.48883°N 20.51317°W / 63.48883; -20.51317