COUNTY: | Van Buren | ACREAGE: | 400 Acres |
7.5' QUADRANGLE: | Doyle | OWNERSHIP: | State of Tennessee |
PHYSIOGRAPHIC PROVINCE: | Cumberland Plateau | YEAR DESIGNATED: | 1974 |
DESCRIPTION: |
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Big
Bone Cave is a 400-acre natural area located in Van Buren County on the
Cumberland Plateau escarpment. It is named for the discovery of the bones
of a giant ground sloth (Megalonyx jeffersonii) in 1811. This
skeleton, now on display at the Academy of Natural Sciences in Philadelphia,
represents the only known specimen of a giant ground sloth with a complete
pelvis. Also significant was the 1971 discovery of the bones of a pleistocene
jaguar (Panthera onca augusta). The cave also has historical
significance as a saltpeter mine during the War of 1812 and the Civil
War, when as many as 300 miners mined the nitrate. The artifacts are remarkably
well preserved in the dry cave and represent the state's best-preserved
saltpeter mining artifacts. Artifacts in the cave include wooden water
pipes, railways, catwalks, ore carts, hoppers, vats and ladders.
The
land above the cave is mixed with woodland and areas of past farming,
with evidence of past grazing activities. With 9.62 miles of passage,
Big Bone Cave is the sixth longest mapped cave in Tennessee. Much of the
cave's geology is Monteagle limestone formation that is approximately
380 feet thick. The ridge above the cave is capped by Hartselle sandstone
with various strata of formations beneath it. While Bone Cave is technically
located on the Eastern Highland Rim, it is considered an outlier of the
Cumberland Plateau because of these formations. It is also recognized
by the United States Department of Interior as a National Natural Landmark.
It is one of only 13 National Natural Landmarks in Tennessee. These landmarks
are recognized as the country's best remaining examples of major biotic
communities and geologic features.
SITE MANAGEMENT:
Rock Island State Park (https://www.tnstateparks.com/RockIsland/), 82 Beach Road, Rock Island, TN 38581, phone (800) 713- 6065 (931) 686-2471. Division of Natural Areas, 401 Church Street, 7th Floor L&CAnnex, Nashville, TN 37243, phone (615) 532-0431.
PUBLIC ACCESS:
Limited public access is provided. Public tours are available; contact Rock Island State Park.
DIRECTIONS:
Rock Island State Park and Bone Cave State Natural Area are located between Sparta and McMinnville. To reach Rock Island State Park: take Hwy 70S to Hwy 136. Continue about one mile and turn left on Hwy 287 in Rock Island. Proceed for about three miles to the park entrance on the right.