On the Colorado River in Marble Gorge A private raft floating through fog in Marble Gorge. A commercial whitewater river trip floating through Marble Gorge in the Grand Canyon. Floating through Marble Gorge. Floating through Marble Gorge. Floating in Marble Gorge. Hiking up the Silver Grotto, Shinumo Wash. Rafters climbing up Shinumo Wash in Marble Gorge. Looking toward the river from Shinumo Wash in Marble Gorge. Approaching Redwall Cavern in Marble Gorge. Approaching Redwall Cavern in Marble Gorge. Approaching Navajo Bridge in Marble Gorge. Approaching Vasey's Paradise, Marble Gorge. Approaching Redwall Cavern in Marble Gorge. Climbing into Shinumo Wash, Marble Gorge. Commercial (OARS) rafts floating through Marble Gorge. View from inside Redwall Cavern in Marble Gorge. View upstream from Redwall Cavern in Marble Gorge. Whitewater rafters hiking up the Silver Grotto (Shinumo Wash) in Marble Gorge.