Cave diving in the Barrois
Clay-laden, often murky springs around Saint-Dizier and Bar-le-Duc: the Rupt-du-Puits pool and, with a key from the regional caving league, the sumps behind its borehole; long exploration sumps such as the Bezerne and the Fontaine de Laneuville; and, south of Joinville, the clear Dhuit.
9 sites · down to 20 m
All 9 sites
| Site | Max depth | Type | Certification |
|---|---|---|---|
| Source Bleue (Villiers-sur-Marne) | 19 m | Sidemount | Full cave |
| Fontaine de la Bezerne | 20 m | Sidemount | Full cave |
| Fontaine de la Dhuit | 16 m | Sidemount | Full cave |
| Fontaine de Laneuville | 8 m | Sidemount | Full cave |
| Source des Clefmonts (Pont de la Grotte) | 3 m | Sidemount | Full cave |
| Grande Fontaine de Sommelonne (Trou Bleu) | 7 m | Small cylinders / no-mount | Full cave |
| Réseau du Rupt-du-Puits – forage (siphons amont) | 6 m | Sidemount | Full cave |
| Fontaine Saint-Martin (Pas-Saint-Martin) | 7 m | Sidemount | Full cave |
| Vasque du Rupt-du-Puits | 11 m | Sidemount | Full cave |
Certification requirements, configurations and trimix depths are estimates for planning. Always check them locally and dive within your training.
Practical info: rules, fills and emergency numbers
Emergencies
- 112 (or 18); say it is a cave-diving accident and ask for the spéléo-secours (the SSF's departmental adviser). National SSF line: 0800 121 123. DAN Europe: +39 06 4211 5685.
- Hyperbaric chambers: CHU de Reims, Hôpital Maison Blanche, 45 rue Cognacq-Jay, 51092 Reims (~1 h 15 from Saint-Dizier): chamber +33 3 26 78 48 23; according to MedSubHyp (Aug 2024) only on working days 8:30–18:00, outside those hours advice from the on-call intensive-care doctor via the SAMU (15/112). 24/7: Hôpital de Hautepierre, Centre régional d'oxygénothérapie hyperbare, avenue Molière, 67200 Strasbourg (~3 h): chamber +33 3 88 12 79 17, out of hours via intensive care +33 3 88 12 79 01. Hôpital Raymond-Poincaré, 104 boulevard Raymond-Poincaré, 92380 Garches (~2 h 45): emergencies 24/7 +33 7 76 54 29 71. CHRU Jean Minjoz, 3 boulevard Fleming, 25000 Besançon (~2 h 45): +33 3 81 66 89 13, 24/7 on call.
Access and rules
- Access: there is no central scheme. Rupt-du-Puits: the borehole belongs to the ONF and is locked; the key is kept at the Maison lorraine de la spéléologie (MLS) in L'Isle-en-Rigault, for cavers licensed in a European federation, under a convention between the Ligue Grand Est de Spéléologie (LIGES, Maison régionale des sports, 13 rue Jean Moulin, 54510 Tomblaine) and the ONF. The Ligue also holds conventions for the Trois-Fontaines forest (Béva) and the underground quarries of Savonnières-en-Perthois. Source des Clefmonts: gate (as of 1993/2005). Source Bleue: private (hotel). No rules have been published for the other springs.
- Contacts: the springs are explored by local clubs, who also lay the lines; get in touch beforehand. Meuse: CDS 55 (cd.speleo.55@gmail.com) with the clubs GERSM (own cave-diving team, gersm@orange.fr), Los Fouyants (Bar-le-Duc) and Proteus (Beurey-sur-Saulx, clubproteus@gmail.com). Haute-Marne: the ASHM, the only caving club in the département (ashm52100@gmail.com). The Ligue has a cave-diving training commission.
- Licence and insurance: the FFS offers a temporary licence for foreign nationals: 30 days, €53 (2026 rate), insurance included. Apply with a separate form via ffspeleo.fr/adhesion (not through the online AVENS system), with a medical certificate; for cave diving it must be less than a year old. For one or three days there is also an FFS initiation insurance through a club, which also covers cave diving.
Gas and fills
- Gas: no public fill station with published nitrox, trimix or O₂ was found in the area. Bring your own gas, booster and CCR absorbent, or ask local diving clubs (e.g. Hippocampe Club Plongée 52 in Saint-Dizier, hippocampeclubplongee52@gmail.com) whether they can help.
Water and season
- Water and season: 11.5 °C measured in the Rupt-du-Puits (1967; an older account gives 8 °C) and ~10 °C in a Haute-Marne spring (2023): drysuit. Visibility is usually poor because of clay (0–2 m), except in the Dhuit. The springs react strongly to rain (Rupt-du-Puits: ~11 l/s in June 2026, ~1,960 l/s in March 2026); plan after a dry spell. Dhuit: Vigicrues gauge at Saucourt, ideal 0.8–1.2 m.
Getting around
- Lodging: the MLS (17 rue Henri-Chevalier, 55000 L'Isle-en-Rigault, +33 3 29 71 30 12) is a gîte for cavers with meals, by appointment, ~5 km from the Rupt-du-Puits.
Rest day
- Non-diving day: the Beurey-sur-Saulx/Robert-Espagne karst trail (4 km, ~1.5 h, bring a torch) past the Rupt-du-Puits springs; dry caving in the underground quarries of Savonnières-en-Perthois (access via an online form from the GERSM).
Plan a cave diving trip to the Barrois
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.
Compiled from public sources: plongeesout.ffspeleo.fr (FFS site sheets, mostly 1994–2007; Dhuit 2019), the GERSM and CDS 55, Wikipedia, grottomap (IKARE data), showcaves.com, Spéléo Club de Paris, ABIMES, the Maison lorraine de la spéléologie, the FFS, the Meuse département, JHM, Haute-Marne Attractivité, fontesdart.org, MedSubHyp and CDS 07 (September 2026). Much of the dive data is old or comes from a single exploration team. Pins from Wikipedia and grottomap or converted from plongeesout's Lambert coordinates; the Dhuit has no pin yet. ~ = estimate. Rules change — check locally.