Grotte Cosquer
Cave diving in Provence · about 7 km from Cassis
- Max depth
- 37 m
- Type
- Sidemount
- Certification (estimate)
- Full cave
- DPV
- Not DPV-suitable
Palaeolithic cave with paintings and engravings; the entrance was drowned by the sea-level rise after the last ice age. Protected historic monument; a second entrance (1992) was long kept secret.
More about Grotte Cosquer
Signed-in divers also see:
- Whether this site fits everyone's certification, gas and gear
- Access, parking and the route from the road
- Exact map pin and navigation
- Depth profile and sumps
- Configuration advice
- Warnings with sources (1)
- DPV suitability
- Driving times from your stay and a plan with the AI instructor
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Current conditions
Visibility, flow and water levels change quickly. Right before your dive, check what other divers report:
- Cassis – La Rivière Mystérieuse ↗
Association studying the submarine rivers of Cassis (Port-Miou, Bestouan): surveys, measurements and exploration reports.
- FFESSM – Commission nationale plongée souterraine ↗
Cave-diving commission of the French diving federation, with Subaqua articles on Port-Miou and the Bestouan; the regional commission (FFESSM Provence) runs the discovery days in Cassis.
- Plongerdubord.com – plongée souterraine à Cassis ↗
Site about shore dives around Marseille, with announcements of the FFESSM discovery days at Port-Miou and the Bestouan.
- Parc national des Calanques – duiken ↗
Rules for divers in the park: no-diving zones, no-take zones, diver buoys and the diving charter.
- Commission plongée souterraine – EFPS (FFS) ↗
Facebook page of the French caving federation's cave-diving school: courses and news from all over France.
Plan a cave diving trip to Provence
Enter your team, with certifications, gas and configurations, and see right away which caves fit. With driving times from your stay, fill stations and an AI instructor who thinks along.
Certification requirements, configurations and trimix depths are estimates for planning. Always check them locally and dive within your training. Compiled from web research (Parc national des Calanques, FFESSM/Subaqua 2013 and 2017, the Cassis – La Rivière Mystérieuse association, Wikipedia, Grottocenter/Grotto Map, Fontaine-de-Vaucluse commune, Préfecture maritime, DORIS, medsubhyp.fr, dive centres and dive-site databases; Sept 2026). Pins from the park page, Grottocenter or Wikipedia (see each site); four sites without a reliable pin; ~ = estimate. Rules change — check locally.