Hérault and Gard · about 7 km from Saint-Martin-de-Londres
Grotte-exsurgence de l'Avencas
- Max depth22 m
- CertificationFull cave
- SpecialExperienced divers
Diving and fills
Dive here with
No dive centre guides here yet. Do you dive here with guests? Add your centre for free →
Fills nearby
- Fill stationLa Palanquée New'sNitrox and oxygen per a 2018 forum post; trimix and pressure: askRoute ↗
What it looks like
All 1 videos and posts
Videos and posts
From other divers, via YouTube, Instagram and Facebook. They only load when you click; after that, Google's or Meta's privacy rules apply.
Search for more onYouTube ↗Instagram ↗Facebook ↗
Other people's footage, not advice: how someone else dives here says nothing about what suits your team. Dive within your training.
The dive
A cave with a short entrance sump. Bronze Age pottery was found at -6 m in 1950. In 1988 a club cleared a sump and surveyed more than 900 m beyond it.
1 earlier accident or incident has been reported at this cave. Read what happened ↓
Profile and sections
A cave with a short entrance sump. Bronze Age pottery was found at -6 m in 1950.
In 1988 a club cleared a sump and surveyed more than 900 m beyond it. Plongeesout page updated in 2013.
- Depth and profile
- S1 15 m / -6 (at the entrance) · upper sump ~50 m, narrow and muddy · lower branch 250 m / -22 (1982); >1,000 m of passage, 43 m vertical range
- Configuration
- Sidemount or small cylinders; no backmount (estimate)
- DPV: Not DPV-suitable (estimate)
- Short, narrow and muddy sumps (estimate).
Who can dive where
- At least Full cave
- Configurations: Sidemount / CCR / Small cylinders / no-mount (speleo sumps)
- Goes down to 22 m (trimix or deco may be needed)
- Experienced divers only
This is how the planner decides who in your team may dive this cave. Rules your own trip adds (organizer, a mail, the AI) show with your trip.
How to get there
On the D1 near Brissac: ~850 m from the Saint-Étienne-d'Issensac bridge, entrance ~30 m left of the road.
Around Grotte-exsurgence de l'Avencas
Fills1 fill station · 40 km
La Palanquée New's
Boulevard Frédéric Fabrèges, 34250 Palavas-les-Flots
Nitrox and oxygen per a 2018 forum post; trimix and pressure: ask
Mon–Fri 9:00–19:00, Sat 9:30–12:30 and 13:30–19:00, closed Sun (2026)
Large dive shop on the coast near Montpellier (~1 h from Ganges, estimate). Its own site does not mention fills: call ahead. In 2018 a local diver called it the only place around Montpellier for nitrox and O₂.
The links to Booking.com are affiliate links: if you book through one, DiveTripPlanner earns a small commission. You pay the same.
News
All (1)
Accidents and incidents
What happened at this cave before, with the sources. No names are given; read it as a lesson for your own planning.
- November 1982: two divers, one a beginner, went through the short, very murky sump together; on the way back the beginner lost the line, returned to the air space beyond the sump and was rescued quickly.
Access and rules change: check what applies locally right before your trip. Source: GDELT Project and the news feeds of diving magazines. Search for more news ↗ Searched automatically, last on 13 Nov 2026.
More of the latest in Hérault and Gard (Languedoc, France): conditions, closures and news →Going to Hérault and Gard with your team?
Marcel finds the sites that match your team's certifications.
Plan a trip