Hey I've been there!! What a super location I thought Yellowstone and the Grand Tetons was magical and so is the lighting on this image. I may be tempted to reduce purple and magenta just a little - not to eliminate just reduce slightly and I would crop some water off the base to a little below the snow reflection.
There appears to be some noise in the image, I wouldn't have expected this at ISO 250.
Thanks for the feedback. I think the noise was from post processing as I ran "detail extractor" on NIK which tends to enhance noise...here's another version I think is a little better.
The 3rd version works better for me. When using Detail Extractor or Tonal Contrast on landscape imagery I find it almost essential to erase any effects of the filter from the sky, water, or other similar textures that will become noisy when the filter is applied.