Confederate troops used the Civil War Cave, located three miles west of Bentonville for water and as a supply station. Now visitors walk through woodlands to the cave entrance, then take a 25-minute walk underground. Among the highlights are the travertine formations, large mineral deposits which act as natural dams for pools of water. The cave is home to tiny endangered fish, as well as albino crawdads and salamanders. Underground rivers, a trout stream and a miniature lake are just some of the attractions at Bull Shoals Caverns, located just off Ark. 178 at Bull Shoals.
Visitors tour the cave via concrete walkways.
There are no stairs on the floor of this cave, which once sheltered the Indians who roamed the region. At the back of the cave is a waterfall. Six miles east of Eureka Springs is Onyx Cave. Visitors can take a self-guided tour through the chambers with names like the Witches Fireplace and Friendly Dragon. Electronic messages point out the cave's features.