A hiker 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 colorado river river water usa north america grand canyon national park national park arizona outdoors day one person people men adult landscape full length rock formation rock reflection hiking adventure exploration recreational pursuit leisure activity getting away from it all standing shadow canyon tourist travel destination tourist destination tourist destinations tourists tourism rocks rock formations rivers outdoor outside one person only 1 person 1 person only person national parks public land man male males adults landscapes hiker hikers exploring walking hike sport sports recreation recreational pursuits leisure leisure activities daytime