Was following walk from my fifty walks in the dales book, eight miles in two halves East and west of langthwaite, but only did first half, had enough with scrambling and headache. Langthwaite to booze to slei gill to hut, left, down past scar house to the bottom. There was a couple ahead of me but I didn't see how they got past, maybe they just walked up the shallow stream bed? There's nowhere close for a path.... Interesting conundrum.