In reply to petestack:
> Brian Kellett tried it.
Well, he did and he didn't. While the sling was discovered* part way up the Centurion corner with further upward progress 'not inviting' (Kellett quoted by Crocket from the CIC Hut logbook), it seems his intention was always to find a route rightwards to Sassenach.
*I keep wondering about this. Does 'finding a line loop' have to mean 'discovered an old sling', or could it mean 'found a suitable spike to sling and did it'? Is there another source beyond Plackett's account (e.g. Kellett's notebooks, CIC Hut logbook) to clarify?
It was also Kellett who named Vanishing Gully.
Post edited at 11:21