I spent the past 3 days at Yellowstone, so I have plenty of photos to post. Here is a set taken the morning after my arrival. Shot with the D600 and 50mm F1.8G.
You got some cool shots here. #1 is my favorite, but I would clone out those green lens flares in the middle of the shot. #2 is pretty cool too. #3 I think has too much bare sky, I would go with a pano crop on that one.
Looks like you had a good time up there in Yellowstone.
Very nice captures here. I agree about removing the two green flare spots in the first image. I think that would really take that image to another level.