Air Tours

Colorado River Discovery. This respected outfitter offers waterborne tours, including a 4½-hour guided rafting excursion down a calm portion of the Colorado River on comfortable, motorized pontoon boats. The scenery—multicolor-sandstone cliffs adorned with Native American petroglyphs—is spectacular. The company also offers full-day rowing trips along the river, using smaller boats maneuvered by well-trained guides. These trips are quieter and more low-key, and provide a more intimate brush with this magnificent body of water. 6900 Townsend Winona Rd. , Flagstaff, Arizona, 86040. 800/637--7238; outdoorsunlimited.com/colorado-river-discovery.html. From $87.