This wild footage of a climber's 30-metre fall (100 foot) is making the rounds online.
Mark Roberts was scaling the Welsh mountain range Snowdonia, when a climber above him dislodged a block of ice, which fell on him.
That caused Roberts to lose grip on his ice axes, sending him hurtling down the mountainside for 30 seconds - a terrifying descent captured on his helmet cam.
Roberts, a climber and safety consultant, told the British Mountaineering council, "You just try not to panic and hope there's some luck with you."
There certainly was, as Roberts escaped with only a fractured ankle, lots of bruises and a chip on the other ankle.
At the end of the video, Roberts can be heard saying "That F-ing hurt".
Elfyn Jones, an officer for the Mountaineering Council, told Wales Online that rescuers were very quick to the scene and that Roberts was "very well equipped and was wearing a helmet which probably helped save his life."