Hoover Dam wall, Boulder City, Nevada, United States of America, North America

travel destination travel destinations travel photography colour image colour color image color horizontal hoover dam wall boulder city cities nevada usa us united states usa us united states united states of america north america american north american outdoors outside day landscape landscapes physical geography topography topography desert extreme terrain architecture architectural non urban scene cloud clouds cloudy sky blue arid incidental people background people people in the background national landmark landmarks concrete dam engineering fuel and power generation curved