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Climbs 11
Rocktype Slate
Altitude 112m a.s.l
Faces all

Crag features

The Nantlle Valley is the forgotten area of slate climbing, almost totally ignored by the Slateheads save for a dedicated few who explored these holes and found a small set of rather adventurous routes. Ray Kay's The Purple Tailed Love Fish was a classic of its genre, but has sadly fallen down. All that remains now across the various holes are a few forgotten trad routes. Some of these look like they might be worth repeating, but in the main these quarries are something of a unknown backwater. They may well yield some exciting new routes to anyone wanting to explore. While some may well be climbable on trad gear, turning up with a drill and some bolts would probably help create more interest from other climbers. Also, some areas look good but would need lower-offs way below the top of the crag to avoid deadly top sections. An additional drawback is that many of the holes are flooded and require an abseil to a ledge or hanging belay to start the routes.

Approach notes

From Caernarfon, head south on the A487. Turn off to Penygroes and follow the signs to Talysarn, turning onto the B4418. At the T-Junction in Talysarn, turn left then right through the village and follow the road to the entrance to the quarry. Park considerately. 

Access Advice

The main Dorothea Quarry pool is reputedly over 100m deep and popular as an unoffical scuba diving location, often used on weekends. It is probably best to avoid Trev's Slab when divers are in the pool although they may not mind. The pool has a gruesome reputation for fatal diving accidents because of its depth and the ease with which divers can get into difficulty.

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Climbs at this crag

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Name Grade Stars Type Logs Partner Ascents
These climbs you have climbed clean.
These climbs you have climbed by seconding or top-roping.
These climbs you have Dogged.
These climbs you Did not Finish.
Climbs are waiting to be checked by a crag moderator, and may not be accurate. Climbs can't be verified by a crag moderator, and they need more information to confirm it. Climbs are no longer climbable.
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We rely on volunteers to moderate their local crags. You would check updates and approve climbs added to the database. It's a very easy job, and all you need is a guidebook and an hour or two each month. [ read more ]