We offer historic natural wonders, fascinating rock formations, and prehistoric fossils, and bats! We are a National Natural Landmark plus a National Landmark of Historic Places and are on the West Virginia Civil War Trails. Organ Cave is the site of the first Prehistoric three toed sloth discovered in the late 1700's. This historic natural cave has over 45 miles of mapped passages with over 200 leads yet to be mapped and surveyed. We are the second longest commercial cave on the east coast.