While Bill's "zingy" version is more consistent with current taste, I personally like the more subtle (and realistic) colors of your original version, though I think the whole thing can be brightened up a little.
I'm less than perfectly happy about the composition, however. I'd suggest trying to crop some from the sides (more from the left than from the right) to make it square. That gets rid of some of the more compoisitionally "dead" areas and focusses on the central peak more.
Lisa