[ Black Hills Photo Gallery - Amusement Parks - Cosmos Mystery Area ] Utilizing scientific principals and an aura of mystery the Cosmos Mystery Area provides a wonderful experience. Visitors can get the feeling that they are able to stand on walls and look over ledges without the fear of falling down the cliff. The Cosmos Mystery Area is located seventeen miles south of Rapid City on US Highway 16 near the Highway 16 and Highway 16A interchange. The Cosmos Mystery Area is something that must be experienced. This shot is looking back towards the tilting cabin.