Sem Slaven, who has been climbing since the age of three, acted as the eyes of the pair when a glaucoma attack rendered his father Geoff, 54, blind in his right eye and with no none else around and no signal on his mobile phone to call for help.
"I knew my dad was in trouble. It was still light but there was no one else around. I just told him where to put his feet. I just kept talking to him and told him we would be all right," Sem told the newspaper on Tuesday.