Hikers in Marble Canyon along the Colorado River, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

photography horizontal travel destinations travel unesco world heritage site marble canyon grand canyon national park national park arizona usa north america outdoors day medium group of people people men adult women landscape rock formation rock hiking adventure exploration recreational pursuit leisure activity getting away from it all cloud sky tourist shadow walking canyon woman adults female females person travel destination tourist destination tourist destinations tourists tourism rocks rock formations outdoor outside national parks public land man male males group landscapes hiker hikers exploring hike sport sports recreation recreational pursuits leisure leisure activities daytime