Drive through CWM Penmachno, pass the quarry to the end, meeting point on the left, oppersite chapel. Come in wellies. The reviews capture the experience, please read below as written by people's experience:
Imagine driving over a single lane mountain track to a tiny hamlet, hiking up to mine shaft hidden in a forest. The host then unlocks the rusting bars & you walk in a dark tunnel dug 160 years ago, as fresh water streams out, taking you with head torches deep under the Welsh mountains & into abandoned caverns & waterfalls. It's magic, Alice can unlock. Hearty, wet, exciting & magical.
We really enjoyed this experience. It’s a fair trek to the mine but a beautiful one through the woodlands walking up a stream... uphill! The views were amazing!! The mine itself was great and very wet. There’s one part where you climb up a waterfall/steep stream! This was lots of fun but quite challenging and exhausting. Once out the mine, there’s another steep uphill walk. Alice is lovely, very chatty! She isn’t a fountain of knowledge on the mine like her husband, but clearly very experienced walking this route! It took nearly 3 hours as no rushing, no issues waiting for group, we looked around an abandoned village. No phone network here.Highly recommend this trip, very good value for money.
Other things to note
Wellies and water proof coat needed. Bring snacks and water.