In 1865, a unit of cavalry soldiers found themselves sent west to defend pioneer settlers against angry Sioux Indians in what is now South Dakota. The soldiers built one of the few stone forts on the American frontier. The fort's quartzite walls still peek out from under a grassy field. Our team has just three days to map, dig, and uncover what remains of Fort James, and what they find tells an intriguing tale of 1865 frontier life.