In reply to AndyP: Thanks for the comment, and the Kurt Diemburger info. I never knew he climbed in Greenland, I associate him with his incredible ascents of 8000m peaks. I'll look out for Diemburger's book, it will be great to read his account of Greenland - and also K2, and 1st ascents of Broad Peak, Dhaulagiri, etc. What a climbing life he has had!