Source du Lez
Cave diving in Hérault and Gard · about 12 km from Saint-Martin-de-Londres
- Max depth
- 101 m
- Trimix from
- 45 m
- Type
- Not known yet
- Certification (estimate)
- Full cave
- DPV
- Not DPV-suitable
Karst spring of the Lez and Montpellier's main drinking-water source, with underground pumping since 1982; ~2.6 m³/s on average.
More about Source du Lez
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
- DPV suitability
- Driving times from your stay and a plan with the AI instructor
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Plan a cave diving trip to Hérault and Gard
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 (the FFS plongeesout.ffspeleo.fr site pages and accident list to 2000, Grottomap/Grottocenter, Wikipedia, Nant municipality and Tourisme Aveyron, FFESSM Occitanie Pyrénées Méditerranée, Made in Perpignan, CSLG Besançon, Medsubhyp, CDS 30 and CDS 34, dive-centre and dive-shop websites, the Plongeur.com forum; Sept 2026). Pins from Grottomap, plongeesout GPS or converted from Lambert III (may be 50–200 m off); ~ = estimate (drive times too). Much of the site data is old (1980–2007). Rules change — check locally.