Grotte marine d'Alon
Marine cavity explored in 1999 by Hervé Tinton with the S.C.Sanary, then extended in 2008 by Michel Guis into a flooded gallery.
EspeleoWorld
Grotte marine d'Alon
Marine cavity explored in 1999 by Hervé Tinton with the S.C.Sanary, then extended in 2008 by Michel Guis into a flooded gallery.
Saint-Cyr-sur-Mer
Length: 60 m · Depth: 15 m
Updated record
https://espeleoworld.com/en/c/grotte-marine-d-alon-saint-cyr-sur-mer
Information can change. Always verify coordinates, access, weather, and cave conditions before setting out.
Marine cavity explored in 1999 by Hervé Tinton with the S.C.Sanary, then extended in 2008 by Michel Guis into a flooded gallery.
Description
Morphology
At the bottom of the entrance lake, an 8-metre climb leads to a pretty little upper chamber (+15 m). Still at the bottom of this lake, a gallery of about fifteen metres reaches the sea through a short sump. In 2008, Michel Guis dived a flooded gallery glimpsed beneath the climb: he covered about fifteen metres, lowest point at about -3 to -4 m, and surfaced in a chamber roughly 5 metres in diameter by 3 metres high. The exploration ends in front of a horizontal stratum clogged, probably, with bauxite.
Other details
Reference: Guillaume CHARDIN - CDS83, Fichier des cavités du Var >" Grotte marine d'Alon" (number 2112001): https://www.fichiertopo.fr/display.php?details=1&indexid=1299
History
Known since time immemorial by fishermen, it was indicated in 1999 to Hervé Tinton, who explored it with the S.C.Sanary.
User Comments (0)
No comments yet.
Be the first to share your experience!
Registered Explorations (0)
No explorations registered yet.
Register your visit to this cave!
Nearby caves
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/27646 · 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 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/27646 · data as of 2026