Siebenhengste-Hohgant-Höhle is a cave located in Switzerland, in the canton of Bern at the north of the Lake of Thun, between the villages of Eriz and Habkern. The cave network is developed in the Urgonian limestone formation (Aptian age).
The cave was first explored in 1966 by the Club Jurassien, a speleology club from La Chaux-de-Fonds in the canton of Neuchâtel, Switzerland, when three of its 34 entrances were discovered. Explorations were later undertaken by the Speleo Club des Montagnes Neuchâteloises (SCMN), as well as several Belgian caving clubs.
In 1975-76, the Groupement Interclub de Perfectionnement à la Spélélogie (GIPS) from Brussels joined the exploration of the underground network. The Centre Routier de Spéléo (CRS) (Brussels) also participated to the discovery of the deep zone (T2) while the Spéléo Club de l'Université Catholique de Louvain (SCUCL) contributed to the continuation of the explorations and survey of the deep zone.
In 2010 it was the world's 11th longest cave, with a 154-km development. It is also the world's 22nd deepest cave with 1 340 m deep.
- Hohgant (F1 and K2 caves)
- Courbon, P.; Chabert C.; Bosted P.; Lindsley K. (1989). Atlas of the great caves of the world. Cave Books: St. Louis, Missouri.
- Miserez, J.-J. (1966–1973). Explorations du Club Jurassien aux Sieben Hengste. Dédales, Cavernes, Le Rameau de Sapin, La Chaux-de-Fonds, Switzerland.
- General map of the underground network – Cavediver.ch
- Höhlenforschergemeinschaft Region Hoghant, HRH
- Club Jurassien
- Spéléo Club de l'Université Catholique de Louvain (SCUCL) – History: 1980
- Belgian Union of Speleology – UBS
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