Being a nerd about all things volcanic; I was very excited about getting to Yellowstone. I was not disappointed, the days riding around the Tetons and up through Yellowstones were the most beautiful days of the trip so far.
The traffic was an issue in some sections of the park with some close calls with passing RV's, but that never took away from the glorious views that bombarded me.
Milege wise the days were short in Yellowstone, which allowed me plenty of time to explore. Since Lander I have been traveling with a group of ten which changed the pace and mood of the trip. Yellowstone was a holiday within a holiday.