You should seriously consider bringing a polarising filter for your mountain photos up here. There are some stunning photos to be had but the light conditions can be pretty difficult. A filter will help to bring out the contrast in your photos where this detail is usually blurred by the sheer light reflected from snow.
Even if you have an auto camera you can do what I did and buy a small camcorder polariser and hold it over the lens while you take the photo - granted there will be some guesswork as you acn't see the polarising effect thru the viewfinder but it helped bring up some photos like this beauty! Sorry for runing it with the yellow, but I have heard far too many stories of original work being ripped-off so I am just covering myself - you can get the impression well enough!