On July 12, 1959, Syd Watts of the Island Mountain Ramblers led a group of 5 (John Weir, Paul Martinson, Reginald Knott and Harry Winstoneon) on a trek to Red Pillar via Comox Glacier. As the group was climbing over Mt. Argus a boulder was knocked loose. Harry Winstone was in it's path. As he dodged the boulder, he lost his footing and fell 80ft down the cliff, onto scree where he slid another 500ft onto the ice and down another 1000ft where he came to his final resting spot. When the party scrambled down to him, they found him unconscious but miraculously still alive. Syd and John left for help while Paul and Reginald stayed behind and made Harry comfortable for the final hours of his life. When help arrived the next day, Harry Winstone had passed away.
The group of hikers were all very experienced and safety oriented. But, sometimes, despite your efforts, accidents can happen and mistakes can be made.