Dionne (Fosse)
La Fosse Dionne, a spring fed by infiltration from the limestone plateau and by the losses of at least one river, is notable for its average flow of 300 litres per second and for a hydrogeological network of more than 40 kilometres.
EspeleoWorld
Dionne (Fosse)
La Fosse Dionne, a spring fed by infiltration from the limestone plateau and by the losses of at least one river, is notable for its average flow of 300 litres per second and for a hydrogeological network of more than 40 kilometres.
Tonnerre
Length: 370 m · Depth: 70 m
Updated record
https://espeleoworld.com/en/c/dionne-fosse-tonnerre
Information can change. Always verify coordinates, access, weather, and cave conditions before setting out.
La Fosse Dionne, a spring fed by infiltration from the limestone plateau and by the losses of at least one river, is notable for its average flow of 300 litres per second and for a hydrogeological network of more than 40 kilometres.
Description
Hydrology
La Fosse Dionne is fed by infiltration of precipitation into the surrounding limestone plateau as well as by the losses of at least one river. La Fosse Dionne is remarkable for its flow (on average 300 litres per second) and for the size of its hydrogeological network, which extends to more than 40 kilometres.
Other details
Source: Collaborative encyclopedia Wikipédia, in French > article "Fosse Dionne" -- https://fr.wikipedia.org/wiki/Fosse_Dionne
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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/24821 · 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 BTH (Contexte hydrogéoélogique) · 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/24821 · data as of 2026