That place is on my list of places to visit.I'm not well traveled, but went to Yellowstone two summers ago and I can't say enough good things about it. Absolutely awe inspiring to me.
1997 Civic EX sedan w/auto trans2001 Accord EX sedan w/5-spd manual2009 Vibe 2.4L w/5-spd manual, sunroof, monsoon, GT spoiler, Magnaflow muffler and rolled SS tip, lowered on H-Tech springs, window tint, debadged (save the red arrow!).
Utah is awesome and Zion is one of the nicest parks I've been to. I went on the subway hike last summer and it was one of the nicest hikes but tough. You have to swim and repel in a few spots. The water was cold enough to cause hypothermia but the rest of the trip was 90+. I would do it again though.