I think you did a great job creating a very simple but effective effect when you composed most of the shots. the blurry trees in #3 bugs me a little bit. Did you tweak the levels a little to punch up the blue skys. Some of the objects are a little dark, but thats a real easy fix in photoshop.
The postpile was neat, massive...even astounding, and only about a 1.5 mile hike if that much. Then there was the 5 mile hike to a waterfall that none of the shots of turned out...oh well