Sunset in South Georgia at Providence Canyon. The canyon formation, made up of a kaleidoscope of coloured sands and clays, owes its existence to destructive early farming practices in the 19th century as is was unknown at the time that the undulating hills were made up of deep sand deposits below a very thin crust of clayey topsoil. Once the topsoil had been disturbed the natural elements did the rest with the canyon progressively deepening over the subsequent 150 years. The dramatic pinnacles which remain are sections of clay which the sand has eroded around. The erosion gullies reach depths of 150 feet (or 46m) and are referred to by the locals as Georgia's "Little Grand Canyon". Providence Canyon State Park, Georgia, United States of America.