A John Shuttleworth gig in a cave had to be stopped after a man ended up dangling from a ledge above it.
The show, part of Shuttleworth's current Back Again tour, was at Peak Cavern, known as the "Devil's Arse", in Castleton on Thursday.
The man was trying to get to the event by following his satnav and had got lost and slipped in the wet conditions.
He was spotted clinging to a tree 100ft above the cave and had to be saved by Edale Mountain Rescue. He suffered only cuts and bruises.
A spokesperson for the rescue team said: "Unfortunately the concert had to be cancelled, and people had to be evacuated from the area due to the danger of rocks being dislodged on to the concert goers below."
Afterwards Shuttleworth tweeted: "The man who was clinging to the cliff - an incident which ended tonight’s show prematurely - is safe and now in an ambulance (so I have been told) We wish him well, and to my lovely Peak Cavern audience - thank you for evacuating so swiftly, and see you soon for the 2nd half!"