This geologic wonder is often referred to as the 'Little Grand Canyon,' and was created with the collapse of a giant cave ceiling. A small portion of the remaining roof forms another natural wonder, one of the largest natural bridges in Missouri. The gulf winds through the sometimes 130-foot vertical walls for a mile. The park is suitable for day-use activities such as picnicking and hiking, and provides several scenic overlooks for visitors. Located six miles west of Thayer, off Hwy W.
