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Système des Cent Fonts

Cave diving in Hérault and Gard · about 9 km from Saint-Martin-de-Londres

Max depth
95 m
Trimix from
45 m
Type
Sidemount
Certification (estimate)
Full cave
DPV
Not DPV-suitable
Experienced diversDepends on water level or swellPermission needed

Outflow of water that sinks in the Buèges 20+ km upstream. The sump level varies ~3 m (the opening ranges from 3 x 5 m to 1 x 5 m), with a pronounced low-water period.

More about Système des Cent Fonts

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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Plan a cave diving trip to Hérault and Gard

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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.