When doing a cemetery survey, the goal is to find every locatable grave, known or unknown. An old survey of Sumter County, Georgia, cemeteries noted an “unknown grave,” but the listed GPS coordinates led to a spot where there was clearly nothing. A church once stood nearby, suggesting the possibility of an old burial ground. After searching the area, we came across this unusual structure. At first glance, it looks like a box tomb built from fieldstone, but on closer inspection, it appears to be