Grotte de Hontgrillon
A winding crawl leads to a high, spacious chamber, then to a decorated gallery that ends at a clay fill.
EspeleoWorld
Grotte de Hontgrillon
A winding crawl leads to a high, spacious chamber, then to a decorated gallery that ends at a clay fill.
Marsolan
Length: 100 m
Updated record
https://espeleoworld.com/en/c/grotte-de-hontgrillon-marsolan
Information can change. Always verify coordinates, access, weather, and cave conditions before setting out.
A winding crawl leads to a high, spacious chamber, then to a decorated gallery that ends at a clay fill.
Description
Morphology
A winding crawl 28 metres long, low but gradually widening, leads to a fairly high (5 metres) and spacious chamber. From the axis of this chamber a gallery of comfortable dimensions departs (5 to 7 metres wide, 2 metres high on average). Then the vault lowers after a final widening and progress stops at an invasive clay fill, 90 metres from the entrance.
Speleothems
In the gallery, the walls and ceiling are beautifully decorated with speleothems.
Progression
Progress follows a winding crawl 28 metres long, low but gradually widening, to a fairly high (5 metres) and spacious chamber; from the axis of this chamber a gallery of comfortable dimensions departs (5 to 7 metres wide, 2 metres high on average), then the vault lowers after a final widening and progress stops at an invasive clay fill, 90 metres from the entrance.
Other details
The Hongrillon cave is the most interesting cavity of this Marsolan plateau. It appears on the site of the regional gathering of speleologists of Midi-Pyrénées in 2011: http://www.comite-speleo-midipy.com/Infospages/lectoure2011/Hontgrillon.pdf
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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/24487 · 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 (Description sommaire) · 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/24487 · data as of 2026