The Grand Canyon is just GRAND! I love this part of SW US; if you look at the whole area, starting with Bryce and it's hoodoos (eroded sandstone formations), then go south to Zion Natl. Park (eroded granite) and continue south to the north rim of the Grand Canyon (eroded everything), you can get the whole picture of what has happened by water and wind to this entire area. Throw in Monument Valley, the Painted Desert (multi-colored), the Vermillion Hills (purple)and on south to Sedona for a spiritual finish. This was a great 10 day trip, with a bush w/ hundreds of hummingbirds and beautiful hikes. Stay in Springdale,UT and the Northridge Lodge, if you get the chance.