Caves And Karst

Over 300 caves have been identified within the boundaries of Ozark National Scenic Riverways, ranging from not much more than a rock overhang to one cave with almost seven miles of identified passages. Eight caves, including an open sinkhole, have been designated as outstanding natural features.

The Ozarks is an area typified by what is called "Karst Topography." This means that the geologic structures underneath the earth are made of soluble limestone and dolomite. Water has been at work underground wearing away passages waterfilled ones we call springs and formerly water filled ones we call caves. A karst landscape is one in which caves, springs, sinkholes and losing streams are found. Due to the porous nature of the ground, and the movement of water underground over sometimes great distances, groundwater in karst areas is particularly vulnerable to pollution.

Cave ecosystems are unique and delicately balanced, with major changes possibly occurring from relatively slight disturbances. Geologic formations in some caves are quite fragile, easily damaged by vandalism or visitor overuse. Their formation is extremely slow, and physical damage may remain in evidence for generations. Some caves have been used by man and animals since prehistoric times, and evidence of this use and artifacts may be easily obliterated. Some Ozark caves, which are better known or more easily reached, have received considerable visitation, and more damage and site deterioration have occurred. Caves may contain unsuspected hazards to visitors unfamiliar to such alien environments, and the threat of serious injury or death from falls or drowning is always present. Several caves have been identified as having critical habitat for the endangered Indiana and gray bats. Some of these caves are gated or signed to protect bat habitat. Please respect these closures.