His friends died on Ben Nevis after being caught in a “massive, massive avalanche” in an area known as Number 5 Gully. The four were members of a Swiss-based climbing club and yesterday the 30-year-old survivor paid tribute to the victims. Posting on social media, Mr Biselx said: “Raph, Cédric and Adrien. Thank you for your friendship. I will carry you in my heart forever.”
He also thanked his friends for their inspiration and said that he and others were “all here” for the men’s families.
Two of the deceased were also Swiss and the third was French.
A huge rescue operation was mounted involving Lochaber and Glencoe mountain rescue teams, Coastguard helicopter crews, military personnel, police and the ambulance service.
Paul Boggis, a mountaineering instructor, was among volunteers in the area who helped to carry the climbers from the scene of the accident.
He said one of his clients had heard what they thought were shouts for help.
Soon after, people could be seen heading for an area below Number 5 Gully, and then a Coastguard helicopter appeared close by.
Mr Boggis did not go with his clients to the slope beneath the gully for fear of further avalanches and instead went to where a group of people had gathered around a casualty below the slope. He said: “We asked if we could help with that casualty.
“The others had transceivers (emergency locator beacons), we didn’t have transceivers, and they headed for the snow slope in the firing line of Number 5 Gully.
“So there were some very brave people on the scene who were helping the casualties.”
Mr Boggis did his best to make the casualty he was with comfortable, before he and two others helped to carry him from the scene.