Évent de Donos
Temporary vent of Donos, active only during major floods, whose route descends to -16 m then climbs to a terminus at -3 m blocked by a debris cone.
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Évent de Donos
Temporary vent of Donos, active only during major floods, whose route descends to -16 m then climbs to a terminus at -3 m blocked by a debris cone.
Thézan-des-Corbières
Length: 140 m · Depth: 16 m
Updated record
https://espeleoworld.com/en/c/event-de-donos-thezan-des-corbieres
Information can change. Always verify coordinates, access, weather, and cave conditions before setting out.
Temporary vent of Donos, active only during major floods, whose route descends to -16 m then climbs to a terminus at -3 m blocked by a debris cone.
Description
Morphology
A crumbling step at the entrance leads into a descending passage of modest dimensions. A 2-metre step precedes a more vertical meandering section. This leads to the low point at -16 m. The passage then climbs for about twenty metres while widening. Another step announces another low point that can sump, followed by a flat section and a final low point. Then two large steps are climbed and one arrives in a lower gallery, cut by two water marks; then the passage climbs more steeply and ends at -3 m against a debris cone that blocks the gallery.
Hydrology
A vent is a temporary water outlet; that of Donos only works during major floods; one must nevertheless be cautious when wanting to visit it, several passages in the cavity may be full of water. The best period is therefore summer to visit it. No air at all in this cavity, certainly due to the presence of a sump beyond the terminus.
Other details
Lacustrine limestones of the Thanetian (e2a).
Bottom to be re-examined for a possible digging open.
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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/74184 · 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 Stoche (Description générale), Stoche (Géologie) · 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/74184 · data as of 2026