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UPDATE: Sadly the quarry is now closed to swimming and cliff jumping and from what I have heard large fences have been erected all the way around the quarry edge.

Clear blue water, 90 metres deep at points. Large quarry very popular with scuba divers. Easy access to the water via the slipway and parking nearby. Amazing derelict slate quarry buildings all around the site.
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Swimmer descriptions

  • Added: 23/07/2018

    A vast, wild site with many fascinating overgrown ruins, like a Welsh Angkor Wat. Circumnavigate the lake to discover old railways and a beam pump house. Over 100m deep in places, the lake is the flooded amalgamation of many individually operated quarry pits of varying depths. Swimmers are welcome at the diving pontoon, at the end of a rough vehicle track. Currently open to the public, but development plans afoot.

    15 mins, 53.0561, -4.2393. Park near the roundabout at the far E end of Talysarn (LL54 6AF). Follow access track E: after 70m a stile R leads to a swimming lagoon in fields, 100m on is a new security gate. Continue on main track 700m to reach the parking for the main dive/swim location (open to vehicles) at listed lat long. But bear L on footpath for ruined Talysarn Hall and barracks on R at 53.0559, -4.2439. Beyond the lake dive site, detour off E along the deep tramway cuttings, and find many more ruins to the N and E. Circumnavigate lake to find to find the magnificent Cornish beam pumping engine at 53.0542, -4.2435, with a second lake to the SW with tall island.

    from Wild Guide to Wales (Wild Things Publishing, 2018)

    This description has been flagged !

  • Added: 03/09/2019

    Visited August 2019 and Dorothea is perfectly accessible.

    The access road now has a barrier so have to park in Nantlle village and 10min walk to quarry.

    No fences visible.

    what3word app location is tumble.profiled.gangs

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