NABSQNO 15S-520770-4202979 MAP
Ha Ha Tonka Natural Bridge is located in Ha Ha Tonka State Park on State Route D in Camdenton, Missouri. It is a waterfall natural bridge composed of dolomite. It has a span of 50 feet and is a very short walk from the road. At one time there was a road going across the top of the bridge. Photo and measurement by David Brandt-Erichsen.
The book Geologic Wonders and Curiosities of Missouri lists 87 natural arches in the state, and does not claim to be complete. Ha Ha Tonka is item 339 in the book and item 14-26 in the Vreeland catalog.