Valley with colourful foliage in the Indian summer, Great Smoky Mountains National Park, UNESCO World Heritage Site, Tennessee, United States of America, North America

color image photography outdoors no people nobody mountain scenic scenery landscape fall summer great smoky mountains smoky mountains national park day unesco world heritage site tree travel travel destinations horizontal mountains nature scenics beauty in nature autumn seasons valley trees colorful foliage usa indian summer great smoky mountains national park unesco world heritage site tennessee united states of america north america blue sky yellow golden