This cave contains archaeological evidence of human occupancy from 7,000 B.C. to A.D. 1,400. Artifacts from this cave are displayed in the Smithsonian Institution, in Washington D.C.

Miller Cave is part of a cave complex in the bluffs above the Big Piney River, along the southern boundary of Ft. Leonard Wood. One of the largest caves on Fort Leonard Wood, it is the only one open to the public. A trail leads to the main entrance, in a bluff approximately 150 feet above the Big Piney River; two more openings face the river, affording a spectacular view of the river valley. Trail is steep, but a short walk.

When planning a visit to Fort Leonard Wood, visitors are encouraged to contact the facility to determine what identification will be accepted. All adults seeking to gain access to Fort Leonard Wood must have REAL ID compliant state-issued driver's licenses or  identification cards. If your state-issued driver's license or ID card is not REAL ID compliant, you will be required to provide an alternate acceptable identification as well. Valid vehicle registration and proof of insurance are also required.