From JRat's log:
Chelm’s Combe Quarry Cave
John Aylott, Rod, Dave (NTTSCC) Rachel, Quackers.
Three interesting “collector’s items” in the National Tower Testing Station Quarry. Chelm’s Combe Quarry Cave and Box Cave are both extremely well decorated – the latter with a fairly large chamber. Reynold’s Rift is tight and wet-ish with a desperate dig in a choked sump at its bottom. How the hell John manages to drill 3’ slotholes down here I will never know! Nice to wash off in the firm’s own washroom after the trip.