Ireland and Northern Ireland · about 10 km from Westport
Pollatoomary (Mayo)
Info · exploration
Information only: this cave was explored by cave-diving expeditions, and we know no dive centre, guide or club that takes visitors.
- Max depth120 m
- CertificationFull cave
- SpecialExperienced divers
Diving and fills
Dive here with
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Now at Pollatoomary (Mayo)
The dive
A dark spring shaft in the Partry Mountains: InDEPTH speaks of "dark, unfriendly waters". Dry weather and low water give the best conditions.
Profile and sections
A dark spring shaft in the Partry Mountains: InDEPTH speaks of "dark, unfriendly waters". Dry weather and low water give the best conditions.
In 1978 Martyn Farr reached -33 m. Later expeditions went ever deeper: -86 and -103 m in 2008, -113 m in 2018 and -120 m in April 2025, Ireland's deepest cave dive.
- Depth and profile
- A single shaft · a rope to -30 m and a restriction below it · explored to -120 m (April 2025)
- Configuration
- Expedition dive: the 2025 record dive took 3 h 27 min, with a rebreather, 4 cylinders and a scooter.
Who can dive where
- At least Full cave
- Configurations: Backmount / twinset / Sidemount / CCR
- Goes down to 120 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
The resurgence of the Aille in the townland of Bellaburke near Killavally (Westport), on private farmland. InDEPTH calls it one of the few deep dives in the British Isles with easy surface access. Permission: ask the landowner.
Around Pollatoomary (Mayo)
FillsNo fill station known nearby
No provider in Ireland yet
The caves here are listed as information only: we don't know a dive centre, guide or club yet that takes visitors, so you can't plan a trip here yet. Do you know one, or are you one? Let us know.