In reply to fmck:
1996, Graham Little, Kev Howett
(As one of the original perpetrators of Mystic, I seem to remember very little, if any, gear, on the upper stretches of that too. We were camping in lower Glen Rosa, had done various things on Cir Mhor and South Slabs, then woke up to a pea-souper. Felt our way over to Glen Sannox, hence the route name.)