Watch: Cavers Tackle the Ladder Pitch in Ogof y Daren Cilau

The video of the Daren trip from last month.

This is what Caving News had to say about it.
"Join members of the Dudley Caving Club on a recent trip to visit Ogof y Daren Cilau‘s Time Machine, the largest cave passage in the U.K.
Filmed by one of our favourite caver/filmmakers Keith Edwards, the video was shot during a recent trip in mid-January."