Veryovkina Cave

Veryovkina Cave
155 m [508 ft] deep Babatunda pit at −400 m [1312 ft], the largest shaft in the cave
LocationAbkhazia,[note 1] Georgia
Coordinates43°24′56″N 40°21′23″E / 43.41556°N 40.35639°E / 43.41556; 40.35639
Depth2,209 meters (7,247 ft)
Length17,500 meters (57,400 ft)
Discovery1968
GeologyLimestone
Map

Veryovkina Cave (also spelled Verëvkina Cave, Georgian: ვერიოვკინის მღვიმე, romanized: veriovk'inis mghvime, Abkhaz: Вериовкин иҳаԥы) is a cave in Abkhazia,[note 1] a disputed region of Georgia. At 2,209 meters (7,247 ft) deep, it is the second deepest-known cave on Earth.[1][2] Veryovkina is in the Arabika Massif, in the Gagra mountain range of the Western Caucasus, on the pass between the Krepost[3] and Zont[4] mountains, close to the slopes of Mount Krepost. Its entrance is 2,285 meters (7,497 ft) above sea level.[5] The entrance of the cave has a cross section of 3 m × 4 m (9.8 ft × 13.1 ft), and the depth of the entrance shaft is 32 m (105 ft).[6] The confirmed depth of the cave is 2,209 m (7,247 ft) (including 26 m (85 ft) in the lower siphon).[7]

Naming

In 1968, the cave was assigned the name S-115, which was later replaced by P1-7, and in 1986 it was renamed after caver and cave diver Alexander Verëvkin. Verëvkin died in 1983 while exploring a siphon in the cave Su-Akan,[8] located in the Sary-Tala massif, now Kabardino-Balkaria, Russia.

Memorial plaque at the Suu-Akan cave where Alexander Veryovkin died tragically in 1983

History

Member of the Perovo-Speleo team passing the flooded passage at the depth of −1,400 m (−4,600 ft), in 2018
Two profiles of the cave
  • 1968: the cave was discovered by cavers from Krasnoyarsk. They reached a depth of 115 m (377 ft) and marked it on the map as S-115.
  • 1982: the cave was discovered for the second time by the expedition of the "Perovo" speleoclub (PSC) from Moscow. It was marked as P1-7.
  • 1983–1986: cavers from the same team continued exploration and reached the depth of 440 m (1,440 ft).
  • 1986–2000: work in the cave did not take place.
  • From 2000 to 2015 – the PSC and its "Perovo-speleo" team (PST) researched the cave bottom. Despite the effort, the deepest known cave depth remained at 440 m (1,440 ft).
  • August 2015 – cavers from the PSC discovered a new shaft, but could not explore it because they did not have rope. This discovery opened the way to a series of later discoveries.
  • June 2016 – the expedition of the PST took place. The team started from the same point. They surveyed a pit that was about 30 m deep and a small system of passages below. The next day Evgenyj Kuzmin climbed over the wall of boulders and found the head of the Babatunda pit. Its depth was later determined to be 156 m (512 ft). That expedition managed to reach a depth of 630 m (2,070 ft).
  • August 2016 – a joint expedition of the PST and the PSC reached a depth of 1,010 m (3,310 ft).
  • October 2016 – the expedition of the PST reached a depth of 1,350 m (4,430 ft).
  • February 2017 – the expedition of the PST reached a depth of 1,832 m (6,010 ft). The cave advanced to the second deepest in the world, after Krubera (Voronya) cave.
  • Early August 2017 – the PSC explored the cave to a depth of 2,151 m (7,057 ft). An ancient collector of the karst aquifer system with extensive horizontal tunnels, not typical for the Arabika Massif, was discovered. Veryovkina became the second super deep cave (over 2 km (1.2 mi)) and the deepest accessible without diving equipment.
  • Late August 2017 – the PST reached a depth of 2,204 m (7,231 ft), thus setting a new world depth record. A huge system of more than 6,000 m (20,000 ft) of subhorizontal passages below −2,100 m (−6,900 ft) was discovered and surveyed.
  • March 2018 – another expedition of the same team added more than a kilometer of tunnels to the cave map. They also measured the depth of The Last Nemo Station terminal siphon lake. It was 8.5 m (28 ft) and so the total cave depth reached 2,212 m (7,257 ft).[1]
  • September 2018 – a photo trip of the PST to the bottom of the cave took place, led by Pavel Demidov, with the English cave photographer Robbie Shone.[9] The team narrowly escaped the flood caused by a rain storm, which filled the lower level of the cave.[10][11]
  • August 2019 – the cave depth was increased to 2,212 meters (7,257 ft) during the survey by members of the PSC.[12]
  • August 2022 - tracing of underground water flows to known surface lakes, precision measurement of entrance[13][14]
  • August 2023 – the cave depth was increased to 2,223 meters (7,293 ft) through the survey of the siphon Captain Nemo's last stand by an underwater drone, again during the expedition of the PSC.[15]
  • August 2024 – during another expedition of the PSC the cave depth was decreased to 2,209 meters (7,247 ft). The previously established connection between the stream at the bottom of the cave and the Blue Lake (Голубое озеро (Абхазия)) on the surface enabled the precise measurement of the cave depth by taking into account the difference in heights between the entrance and the bottom siphon using a high-precision GNSS receiver EFT M3.[16]

During an expedition in 2021, PST found the body of a caver, who died exploring on his own, at −1,100 meters (−3,600 ft). He was later identified as Sergei Kozeev, who left his home in Sochi (Russia) on 1 November 2020 and began descent into Veryovkina, where he spent around a week at a −600 meters (−2,000 ft) permanent camp. Then he continued his descent down to technically challenging parts at −1,100 meters (−3,600 ft) where he got stuck, and died of hypothermia. He did not bring stirrups necessary to climb out of the lower, perpetually wet, regions of the cave. [17] The body was eventually recovered after a complex retrieval operation on 17 August 2021.[18]

See also

Notes

  1. ^ a b The political status of Abkhazia is disputed. Having unilaterally declared independence from Georgia in 1992, Abkhazia is formally recognised as an independent state by 5 UN member states (two other states previously recognised it but then withdrew their recognition), while the remainder of the international community recognizes it as de jure Georgian territory. Georgia continues to claim the area as its own territory, designating it as Russian-occupied territory.

References

  1. ^ a b Ljubimov, Petr (12 March 2018). "Экспедиция в Верёвкина март 2018. Глубина пещеры достигла -2212 метров" [Expedition to Veryovkina in March 2018. Cave depth reached – 2212 m] (in Russian). Retrieved 25 November 2018.
  2. ^ "Worlds Deepest Caves"[usurped]. Compiled by: Bob Gulden. October. 10, 2018
  3. ^ Kovinov, Dmitrij. "Поход по Арабике через перевалы Дзоу и Шу, 21–24 августа 2016" [Trekking through Arabica over the passes Dzou and Shu, 21–24 August 2016] (in Russian). Retrieved 8 May 2018.
  4. ^ "Гора Зонт" [Zont Mountain] (in Russian). Retrieved 8 May 2018.
  5. ^ Ljubimov, Petr. "ОТКРЫТИЕ И ИСТОРИЯ ИССЛЕДОВАНИЯ ПЕЩЕРЫ им. А. Веревкина (1968–1986 г.)" [Discovery and Exploration History of the Cave named after A. Verevkin (1968–1986)] (in Russian). Retrieved 3 April 2020.
  6. ^ "The daring journey inside the world's deepest cave". BBC Reel. Retrieved 2019-09-29.
  7. ^ Baraszkow, Aleksej (2024-09-20). "SpeleoClub Perowo News". vk.com/perovospeleo. Retrieved 2024-10-07.
  8. ^ "НЕСЧАСТНЫЕ СЛУЧАИ ПРИ ПОГРУЖЕНИЯХ В СИФОНЫ" [Siphon Diving Accidents] (in Russian). Retrieved 11 May 2022.
  9. ^ Walford, Shannon (16 May 2019). "Pro Team: Robbie Shone". 3 Legged Thing LTD. Retrieved 8 December 2019.
  10. ^ Bisharat, Andrew; Shone, Robbie (18 October 2018). "Epic flood sends cavers scrambling for their lives / A National Geographic photographer recounts his fight to escape the world's deepest cave". National Geographic. Archived from the original on April 14, 2019. Retrieved 18 May 2019.
  11. ^ Shone, Robbie (August 2020). "The Climb of His Life". National Geographic. 238 (2): 34–36. ISSN 0027-9358. Archived from the original on July 7, 2020. Retrieved 25 July 2020.
  12. ^ Demidov, Pavel; Parfёnov, Oleg (3 April 2020). "Верёвкина" [Verëvkina]. speleoatlas.ru – Caving atlas of Russia and the Commonwealth of Independent States (CIS) (in Russian). Русское географическое общество / Russian Geographic Society. Retrieved 12 August 2020.
  13. ^ САМОХИН, Г.В.; ТОКАРЕВ, С.В.; СЕРЕДА, А.И; ЗАХАРОВ, Е.В.; БРАГА, Е.В (2023). "ТРАССИРОВАНИЕ ГЛУБОЧАЙШИХ КАРСТОВЫХ СИСТЕМ МАССИВА АРАБИКА (ЗАПАДНЫЙ КАВКАЗ): РЕЗУЛЬТАТЫ ЭКСПЕРИМЕНТА 2022 Г."
  14. ^ "Трассирование подземных вод массива Арбаика (Арабика)". Русское географическое общество (in Russian). 2023-02-05. Retrieved 2024-10-24.
  15. ^ Barashkov, Aleksei. "Веревкина, с 30 июля по 17 августа 2023 г." [Verevkina cave, from July 30 to August 17, 2023]. vk.com (in Russian). Retrieved 28 August 2023.
  16. ^ Barashkov, Aleksei (20 September 2024). "В период с 2 по 25 августа текущего года ..." [In the time from 2 to 25 August this year ...]. vk.com (in Russian). Retrieved 20 September 2024.
  17. ^ Snetkov, Evgenij. "В пещере Веревкина произошло ЧП" [An emergency situation occurred in Verëvkina Cave]. vk.com (in Russian). Retrieved 20 September 2024.
  18. ^ Snetkov, Evgenij. "Веревкина. Вчера, 17 августа 2021г. ..." [Verëvkina. Yesterday, 17 August 2021 ...]. vk.com (in Russian). Retrieved 28 August 2021.

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