Boyau Sous la Bastille
a diagonal entrance that becomes a winding crawlway for a few metres and appears to stop against the rock, of little interest.
EspeleoWorld
Boyau Sous la Bastille
a diagonal entrance that becomes a winding crawlway for a few metres and appears to stop against the rock, of little interest.
Grenoble
Length: 10 m · Depth: 3 m
Updated record
https://espeleoworld.com/en/c/boyau-sous-la-bastille-grenoble
Information can change. Always verify coordinates, access, weather, and cave conditions before setting out.
a diagonal entrance that becomes a winding crawlway for a few metres and appears to stop against the rock, of little interest.
Description
Morphology
The entrance descends diagonally and quickly turns into a crawlway. The crawlway winds for a few metres but appears to stop quickly against rock.
Other details
It must have been the subject of an attempted dig, as a crowbar is still in place at the bottom. Of little interest.
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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/153507 · 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 Paul AUBERTIN (Description générale) · adapted by Espeleoworld (normalized, translated); the adaptation is licensed CC BY-SA 3.0, https://creativecommons.org/licenses/by-sa/3.0/ · https://grottocenter.org/ui/entrances/153507 · data as of 2026