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Ardèche · about 8 km from Ruoms

Font Aïgues Bosc

  • CertificationFull cave
  • Water temperature≈ 12–13 °Cestimated, no reports yet
  • SpecialExperienced divers

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The dive

According to Baudu (2002) this is a small, permanently flowing spring, explored and surveyed by Bertrand Léger.

Profile and sections

According to Baudu (2002) this is a small, permanently flowing spring, explored and surveyed by Bertrand Léger. It is one of three cavities upstream of Font Méjanes, with Les Abeilles and the impenetrable springs at the hamlet of Fontgraze.

The spring is hardly known: apart from a photo of the entrance and the 1978 survey there is almost nothing to be found. The guide's author came across it by chance.

Depth and profile
Two very short sumps (1978 survey, M. A. Odile and J. Dessin, 1:200); per the guide possibly already the end. Depth not stated.
Configuration
Small and permanently flowing, narrow entrance: small configuration or small sidemount only (estimate).
DPV: Not DPV-suitable (estimate)
Small dimensions: no scooter.
Who can dive where
  • CaveAt least Full cave
  • Whole caveConfigurations: Sidemount / Small cylinders / no-mount (speleo sumps)
  • Whole caveExperienced divers only · doesn't decide who may dive
Experienced divers

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How to get there

Hard to find. From Saint-Alban-sous-Sampzon take the D208 towards Chandolas, halfway turn right onto the D246 towards Lablachère. From the first bridge 1.7 km to just past the third bridge (near Font Méjanes), where a gravel road branches off to the left (44°25.744'N 4°15.495'E). On foot: 200 m to a derelict house on the right, park there and walk past it to the bed of the Fontgrace stream, follow it to the left for 600–700 m (partly overgrown). Where the stream bed turns sharply left between rocks, the spring is on the right. Closer by car: up the gravel road ~1.1 km, then a less used road on the right for 200–300 m to a sharp left bend; park there, go down the slope to a plateau with deep rock clefts and find a way down to the stream bed (100–150 m as the crow flies).

Plan your route ↗

Around Font Aïgues Bosc

FillsNo fill station known nearby
Where to sleepAround Ruoms on Booking.com ↗

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Other sites6 within 6 km

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Sources, sharing and disclaimer

Current conditions

Visibility, flow and water levels change quickly. Right before your dive, check what other divers report:

  • Ardèche Caves Conditions ↗
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    Current conditions in the Ardèche caves: visibility, flow, water level, state of the line and temperature.

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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 (Sept 2026) and the guide (2024 edition): CDS 07 and CDS 30, plongeesout.ffspeleo.fr, Spelunca, Grottocenter, foussoubie.fr, club reports and news. Page numbers refer to Stefan Schiemann's Cave Diving Guide Ardèche, Gard & Vaucluse. Map pins come from the GPS coordinates in the guide, from Grottocenter/OpenStreetMap or were converted from Lambert grid references (may be 50–100 m off). For some caves the data is thin or old: check it in the guide and locally. Certification requirements are estimates. Drive times are calculated by road for each stay (OSRM, OpenStreetMap).