Trou du Balcon
EspeleoWorld
Trou du Balcon
Onnion
Length: 25 m · Depth: 11 m
Updated record
https://espeleoworld.com/en/c/trou-du-balcon-onnion
Information can change. Always verify coordinates, access, weather, and cave conditions before setting out.
Description
Sans suite possible
Des travaux de désobstruction importants ont permis de descendre d'une dizaine de mètres dans une trémie instable, mais le fond présente un pincement sans suite possible
History
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Contains information from Grottocenter (Wikicaves), grottocenter.org, made available under the Open Database License (ODbL 1.0, https://opendatacommons.org/licenses/odbl/1-0/), modified. · https://grottocenter.org/ui/entrances/35637 · The derived data is available on request under the ODbL: [email protected] · data as of 2026 · Source: Grottocenter (Association Wikicaves), worldwide collaborative cave database (grottocenter.org), modified. CC BY-SA 3.0, https://creativecommons.org/licenses/by-sa/3.0/ Grottocenter (Wikicaves) · Text by Frédéric Urien - compte administrateur (Sans suite possible) · https://grottocenter.org/ui/entrances/35637 · data as of 2026