#10. Ha Ha Tonka Spring
Ha Ha Tonka Spring flows into what used to be the Niangua River before it was unfortunately dammed to created the Lake of the Ozarks. 49 million gallons of water a day exit this spring. It's surrounded by steep bluffs and man made structures such as a castle. Huge sinkholes and large caves dot the State Park property around the spring. It's the perfect example of karst topography located in the northern Ozark region. It is a very popular area so be aware of larger crowds on nice days, especially during the summer.