This is part of the Rillito River Park in Tucson, Arizona, USA. There are over 36 km of paved trails along the Rillito River that hook up with other trails to form a loop. The trails are used by joggers, biciclysts, and walkers. I have jogged past this bench 2-3 times a week for more than two years and never seen anyone sitting on the bench, hence the title: "Lonely Bench." The photo was taken just before dawn because it's too hot at other times.