Lot · about 24 km from Souillac
Doux de Coly
Closed to divers
Diving ban (as of September 2026). Check locally whether it still applies.
- Max depth65 m
- CertificationIntro to cave (first section)
- SpecialDPV-suitable
Diving and fills
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Fills nearby
- Fill stationThe Cave To BeAir, nitrox and trimix up to 320 bar (standard 21/35, 18/45, 15/55, 10/50), O₂ up to 220 barRoute ↗
Now at Doux de Coly
What it looks like
All 4 videos and posts
Videos and posts
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Other people's footage, not advice: how someone else dives here says nothing about what suits your team. Dive within your training.
The dive
The water is 12-13 °C and visibility at the entrance is 15-20 m. Further in it varies: around 1,000 m sometimes only 2-4 m, clearer again beyond 2,300 m.
Profile and sections
The water is 12-13 °C and visibility at the entrance is 15-20 m. Further in it varies: around 1,000 m sometimes only 2-4 m, clearer again beyond 2,300 m.
The Doux de Coly is the spring of the Coly and one of the longest sumps in Europe. It has been explored step by step since 1956; the far end (2001-2002) was reached with twin CCRs, several scooters per diver and a heated deco habitat.
- Depth and profile
- Entrance gallery ~275 m at avg -8 m · shaft (8 x 4 m) to -35 m · scree slope to -45 m · from ~360 m down to -65 m, then avg -53 m (low points -57 m) to 2,250 m · restriction (1.5 m wide, <1 m high) at 3,580 m · total 5,675 m (2002)
- Intro level
- Bedding-plane entrance gallery (4 x 5 m): ~275 m at an average of -8 m up to the shaft. The shaft itself is not part of it.
- Configuration
- Backmount, sidemount and CCR: roomy gallery and shaft. Beyond the shaft trimix, lots of gas and long deco; small kit makes no sense here.
- DPV: DPV-suitable
- Long, roomy, deep gallery: the far explorations used several scooters per diver. Watch the line: on one exploration it got caught in a scooter propeller.
Who can dive where
- At least Full cave
- Cavern zone / easier part: at least Intro to cave
- Configurations: Backmount / twinset / Sidemount / CCR
- Goes down to 65 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
Spring lake on private property: the owner's permission is required. Kit up and enter from a concrete slab on the bank; the entrance is on the north side of the lake, beyond a flat debris field.
Around Doux de Coly
Fills1 fill station · 46 km
The Cave To Be
842 rue Émile Zola (D14, Bournazel), 46500 Gramat
Air, nitrox and trimix up to 320 bar (standard 21/35, 18/45, 15/55, 10/50), O₂ up to 220 bar
Open year-round (except between the end-of-year holidays), daily 8:30–19:00
Near Gramat, handy for the sites around Gramat and Padirac. Guided dives in 16 caves of the Lot, at your own certification level (air or nitrox without deco, or one trimix dive with deco). Also courses from cavern to full cave, sidemount, CCR and scooter, rental of overhead gear, a shop and accommodation. Contact: Olivier.
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