Whitewater · Colorado River, ArizonaWhitewater rafting, Grand CanyonEXPERTRisk: HIGHUSD Full-canyon expedition…A full 225-mile, 1–2 week expedition through the entire Grand Canyon on the Colorado River, running over 150 rapids including the Class V Lava Falls, with mile-high canyon walls that make helicopter evacuation the only realistic exit for most of the trip.View details