20-year-old Gaelic student Sorley takes the group on 7km circular walk with the famous Cullin range as its spectacular backdrop. He guides the group on a challenging hike around Loch Coruisk, an inland freshwater loch at the foot of the Black Cullins.It's an early start for the group, with a 6am boat trip marking the start of the walk. And Sorley hopes that brushing up on local landmarks and legends will win him extra points to add to the spectacular scenery.But while he might be young and super-fit, could the tricky terrain and infamously changeable Skye weather prove one step too far for his fellow walkers?