In reply to Frank4short: Yep Bregalia, but be careful and get a good forecast, notoriously prone to lightning strikes.
We went with a perfect forecast but had a terrible storm on the descent, I think it was in August.
Not sure why this is, but there are lots of stories similar to ours, including the first ascent.
I guess it has to be a geographical feature but its certainly disconcerting when it happens.
Alison Hargreaves started out at the same time as us, but she was soloing and got down before the storm started, Our friends and Ali and Jim were so concerned they thought of calling out the rescue just before we arrived back in camp on what had fortunately dawned into a perfect day.