In reply to JLS:
Just to reiterate, this really is an excellent film and worth looking out for. It's the original documentary film made in 1953 during the successful first ascent of Everest in colour. I don’t recall ever having seen this before; it’s normally the black and white newsreel footage you see. I believe there was an updated version made in 2003 to celebrate the 50th aniversery but I gather that didn't improve on this original...
http://www.screenonline.org.uk/film/id/1007544/index.html