Dean M. Chriss
Over the Green Abyss, Niagara Falls, Ontario, Canada
(Click image to enlarge)
Multiple ribbons of water plunge more than 90 feet from the rim of Ash Cave in Hocking Hills State Park, Ohio. Ash cave is a large recess cave that is 700 feet long, 100 feet deep and 90 feet high. The cave was named by early settlers who found piles of ash from Indian fires in the cave.