Aven de la Potence n°3
a 52 m vertical shaft opening at the ceiling of a large chamber, with a small side gallery adorned with speleothems.
EspeleoWorld
Aven de la Potence n°3
a 52 m vertical shaft opening at the ceiling of a large chamber, with a small side gallery adorned with speleothems.
Saint-Martin-de-Londres
Sviluppo: 150 m · Profondità: 72 m
Scheda aggiornata
https://espeleoworld.com/it/c/aven-de-la-potence-n-3-saint-martin-de-londres
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a 52 m vertical shaft opening at the ceiling of a large chamber, with a small side gallery adorned with speleothems.
Descrizione
Morfologia
a fine 52 m vertical shaft whose diameter varies from 50 cm at the entrance to about 2 m over more than 40 m. It opens at the ceiling of a large chamber; the last 12 metres (approximately) of the shaft (du puits) are therefore entirely in the void. The chamber is vast.
Concrezioni
a small side gallery of the chamber is adorned with pretty speleothems.
Progressione
Trip out on 22/10/22. The rigging of the shaft was as follows:
- 2AN (1 oak and 1 box) and 1S at the top of the shaft
- 1 dev on AN at -3 m
- 1 fraction on AN at about -30 m
- 1S + AN (fraction) at the top of the chamber (about -40 m)
Long slings are needed.
Careful !! Do not be two in the shaft, both on the descent and on the ascent. However careful one is, it parpines and the purge would take a long time to carry out.
We did not find any anchors to descend into the lower part of the large chamber.
Altri dettagli
To be avoided in summer. It was a little gassy (Un) (even though the cold season had not arrived on 22/10/2022, far from it). It can be felt on the ascent of the first 10 metres or so of the shaft.
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Fonte: BRGM BDCavité (inventaire des cavités souterraines), via Géorisques (www.georisques.gouv.fr), modificato. Licence Ouverte 2.0, https://www.etalab.gouv.fr/licence-ouverte-open-licence/ Ministère de la Transition écologique, de la Biodiversité et des Négociations Internationales sur le Climat et la Nature – données Géorisques (BRGM), mise à jour du 2026-10-16 · dati aggiornati a 2026 · Contiene informazioni da Grottocenter (Wikicaves), grottocenter.org, rese disponibili con la Open Database License (ODbL 1.0, https://opendatacommons.org/licenses/odbl/1-0/), modificate. · profondità, sviluppo · ottenuti il 2026-10-19 · https://grottocenter.org/ui/entrances/2291 · I dati derivati sono disponibili su richiesta con licenza ODbL: [email protected] · dati aggiornati a 2026 · Fonte: Grottocenter (Association Wikicaves), worldwide collaborative cave database (grottocenter.org), modificato. CC BY-SA 3.0, https://creativecommons.org/licenses/by-sa/3.0/ Grottocenter (Wikicaves) · Testo di PMAU (Sortie le 22/10/22) · adattato da Espeleoworld (normalizzato, tradotto); l'adattamento è rilasciato con licenza CC BY-SA 3.0, https://creativecommons.org/licenses/by-sa/3.0/ · descrizione · ottenuti il 2026-10-17 · https://grottocenter.org/ui/entrances/2291 · dati aggiornati a 2026