Doubs and Jura · about 18 km from Ornans
Source du Lison
- Max depth29 m
- CertificationFull cave
Diving and fills
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Fills nearby
- Fill stationDiveStation (Neuchâtel, Zwitserland)Air, nitrox and trimix up to 300 bar; nitrox and trimix only during opening hours. O₂: ask.Route ↗
- Fill stationplongee.ch (Puidoux/Rivaz, Zwitserland)Air, nitrox, heliox, trimix, O₂ and helium; 200 and 300 bar outletsRoute ↗
- Fill stationAquasub (Ahuy, Dijon)Fills dive cylinders; which gases (nitrox, trimix, O₂) and up to what pressure is not published — ask.Route ↗
The dive
At the head of the Lison valley the water pours as a waterfall from a cave; the spring never runs dry. In 2012 there were old bits of line here and there.
Profile and sections
At the head of the Lison valley the water pours as a waterfall from a cave; the spring never runs dry. In 2012 there were old bits of line here and there.
The spring returns the Château-Renaud stream, which sinks via the Creux-Billard. Discharge runs from ~0.6 m³/s at low water to over 30 m³/s in flood (record 89 m³/s, February 1970). A Belgian caving club planned a dive week here in October 2013, cut to three days by floods. The spring has been protected since 1912 (site classé).
- Depth and profile
- Flooded network explored over 1,018 m; sump to -29 m
- Configuration
- No data on passage size or restrictions.
- DPV: unknown
- No data on scooter use or passage size.
Who can dive where
- At least Full cave
- Configurations: Backmount / twinset / Sidemount / CCR / Small cylinders / no-mount (speleo sumps)
- Configuration unknown — research beforehand
- Goes down to 29 m (trimix or deco may be needed)
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
Signposted from Nans-sous-Sainte-Anne (~2 km). Free, open all year; car park ~100 m from the spring. According to a 2012 forum post the souvenir seller at the spring lets divers drive up to unload; the car then goes back to the car park.
Around Source du Lison
Fills3 fill stations · nearest 70 km
DiveStation (Neuchâtel, Zwitserland)
Route de la Pierre-à-Mazel 4, 2000 Neuchâtel, Switzerland
Air, nitrox and trimix up to 300 bar; nitrox and trimix only during opening hours. O₂: ask.
Tue–Fri 9:00–12:00 and 13:30–18:30, Sat 9:00–16:00; air station 24/7 (subscription: ask)
Dive shop with a fill station; formerly the Neuchâtel branch of plongee.ch. The nearest known trimix address. CCR supplies (sorb) and walk-in fills for visitors: ask.
plongee.ch (Puidoux/Rivaz, Zwitserland)
Route du Verney 18, 1070 Puidoux, Switzerland
Air, nitrox, heliox, trimix, O₂ and helium; 200 and 300 bar outlets
Mon–Fri 9:00–12:00 and 13:30–18:30, Sat 9:00–16:00; air station 24/7 for subscribers
Dive shop in Puidoux (Rivaz); one of the most complete gas lists in the area. Air-station subscription CHF 180 a year (couple CHF 290); air CHF 6–12 per cylinder, +CHF 2 for 300 bar. Walk-in trimix fills for visitors: ask.
Aquasub (Ahuy, Dijon)
7 rue de l'Aqueduc Darcy, 21121 Ahuy
Fills dive cylinders; which gases (nitrox, trimix, O₂) and up to what pressure is not published — ask.
Tue–Fri 10:00–12:00 and 14:00–19:00, Sat 10:00–12:00 and 14:00–18:30; Monday by appointment; closed Sunday.
Dive shop on the northern edge of Dijon with rental and a workshop (regulator servicing, cylinder testing). Walk-in fills for visitors and CCR absorbent: ask.
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