Rafting Desolation Canyon (often run with Gray Canyon as the Deso-Gray trip) on Utah’s Green River offers an epic 84-mile multi-day float through one of the West’s most remote Wild and Scenic canyons, from Sand Wash launch to Swasey’s takeout near Green River town. Towering red and brown sandstone walls rise up to 5,000 feet, ancient Fremont and Ancestral Puebloan rock art graces alcoves, and the river cuts through dramatic geologic layers amid wildlife like bighorn sheep, eagles, and deer. The route features over 60 mostly Class II-III rapids—playful wave trains such as Cow Swim, Three Fords, and Wild Horse—with fun hydraulics and boulder dodging, plus long serene flatwater stretches ideal for side hikes to petroglyphs and ruins, and sandy beach camping under starry skies.