A massive complex cliff-line in a superbly quiet location. This vast rambling mountainside, interspersing sheets of rock with towering gullies and vast amounts of heather terraces, will ideally suit strong-stomached mountaineers who can brave the "full mountain day out", or canny crag rats who will find the isolated clean walls and revel in some hidden gems. The climbing varies from long rambling easy classics to marginally accessible extreme testpieces, and polish is unlikely to be a problem.
The Mountain Club, who own the Hut Bryn Hafod that sits below the crag are in process of cleaning/restoring some of the routes, they have also produced a free to download mini-guide that is updated as routed are cleaned so check you have the latest version (atm it is v6). If link doesn't work please go to their website http://www.themountainclub.org.uk/bryn-hafod/craig-cywarch/ and download it.
Turn off the A470 at Dinas Mawddwy and take the road toward Aber-Cywarch before following a minor road up the Cywarch valley. There's a car park and only this should be used. See the approach notes on the mini-guide as mentioned above.