- site. Ogof Cefn-y-Gist
- date. first entered 1975; digging efforts continue intermittently
- location. off the Minera-World's End mountain road
- activities. excavation through the terminal chokes
- access. no known restrictions; entrance section should be avoided in flood conditions; unstable roof in places
- background. a significant feeder to the Miner's River entering The Quarry in Ogof Llyn Parc
