Colourful autumn trees flank the River Merced in Yosemite Valley, UNESCO World Heritage Site, California, United States of America, North America

travel destination photography horizontal colour image autumn river merced yosemite valley unesco world heritage site california united states of america north america outdoors day landscape beauty in nature no people scenics nature non urban scene tree mountain lake reflection tranquillity clear sky valley forest usa us united states american north american color image colour color outside tourist destination travel nobody no one no one scenery scenic scene scenes picturesque the natural world reflecting reflected natural beauty unesco world heritage sites unesco world heritage site world heritage sites