Mark Roberts was climbing Mount Snowdon on February 24th when he recorded the above footage.
As he ascends the mountain a chunk of ice comes flying towards him causing him to lose his grip and begin a rapid uncontrolled descent.
Quoted on The British Mountaineering Council's website, Roberts said:
Once both axes were gone, it was arms, hands, legs and feet in the less consolidated snow on the slope to try and slow my speed. Fortunately I slid into a rocky outcrop on my left with a bit of a thump, which took some of the momentum out of my decent, resulting in a bit of a spin, but I could still look for opportunities below for a point to stop. It finished with a drop onto a bit of a ledge or hole where my pack and crampons took enough hold to stop me.
Roberts was climbing with two others on the day and they were able to get a call into Mountain Rescue. He was airlifted to hospital in Bangor and is doing well despite being "immobile and bruised".