Northern Spain · about 6 km from Matienzo
Cueva del Molino (Bustablado)
- Max depth93 m
- CertificationFull cave
- SpecialSidemount
Diving and fills
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Fills nearby
- Fill stationCentro Buceo PedreñaAir, nitrox and mixed gas; the team includes a trimix gas blenderRoute ↗
- Fill stationBuceo Mundo SubmarinoAir, nitrox, trimix and helium in any mix, up to 300 bar (O₂ and He analysers)Route ↗
What it looks like
All 1 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 explorers call S1 an inviting dive from a shingle pool; S3 is clear, with many fossils. The upstream sump involves complex route-finding.
Profile and sections
The explorers call S1 an inviting dive from a shingle pool; S3 is clear, with many fossils. The upstream sump involves complex route-finding.
The cave is part of the Matienzo Caves Project area; its water comes from the Porracolina side of the Bustablado valley. Chris Jewell extended the upstream sump by 645 m in 2011.
Practical: get in touch with the Matienzo Caves Project. Authorisation from the Cantabrian government may be needed, and notify 112 before entering the cave.
- Depth and profile
- Downstream S1 130 m / -20 · S2 37 m / -6 · S3 40 m / -8 · upstream sump 925 m / -93 (2012) · cave 2,350 m
- Configuration
- Sidemount / small cylinders for the short sumps; the deep upstream sump needs trimix
- DPV: Not DPV-suitable (estimate)
- Reached through dry caving with a squeeze
Who can dive where
- At least Full cave
- Configurations: Sidemount / CCR / Small cylinders / no-mount (speleo sumps)
- Goes down to 93 m (trimix or deco may be needed)
- Experienced divers only
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
Walk-in entrance, then dry caving: an enlarged squeeze, 5 m and 2 m climbs and oxbows to the water-level passages.
Around Cueva del Molino (Bustablado)
Fills2 fill stations · nearest 21 km
Centro Buceo Pedreña
Barrio La Barquería 151E, 39130 Pedreña
Air, nitrox and mixed gas; the team includes a trimix gas blender
Not stated — ask
Buceo Mundo Submarino
C/ Dr. Federico de la Lastra 3, bajo, 39770 Laredo (Cantabria)
Air, nitrox, trimix and helium in any mix, up to 300 bar (O₂ and He analysers)
Not listed — ask
SSI centre with recreational and technical courses; rents 10/12/15/18 l cylinders and 2×10 and 2×12 l twinsets. Fills for visiting divers: ask. Closest fill point for Matienzo (~30 min, estimate).
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Caves nearby3 within 51 km
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