13882631 - Person dwarfed by massive Redwall Cavern on the Colorado River.13882632 - Person dwarfed by massive Redwall Cavern on the Colorado River.71367083 - The naturally formed Redwall Cavern, Colorado River, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America71043479 - The Redwall Cavern, a giant cave in the walls of the Grand Canyon, seen while rafting down the Colorado River, Grand Canyon, Arizona, United States of America, North America71043618 - The Redwall Cavern, a giant cave in the walls of the Grand Canyon, seen while rafting down the Colorado River, Grand Canyon, Arizona, United States of America, North America
