In reply to jon:
> ... I believe there are steel stanchions now in this upper rocky part - there was a big pile of them ready to be placed when I did it.
Yes they are now in place Jon. Very useful in descending some very iffy ground, but mountains really shouldn't be tamed in this way.
> In descent I'm pretty sure we took the SW flank - we went left in descent onto a really scrappy face covered in wet snow. I certainly wouldn't have wanted to use it in ascent. I'd say in retrospect simply reversing the West Ridge all the way would be safer and more enjoyable.
Agreed, though I think it is more frightening in descent. There was an enormous crevasse at the base of the face, with a single bridge - which was a narrow chute, that all the stones were hurtling down. Getting across it was Russian roulette. It is really quite an unpleasant and dangerous descent route, so the West ridge option seems sensible.
The descent all the way to the roadhead at 2050m is a nightmare! That lake that seemed pleasantly scenic on going in, seems never-ending on the way out.