Former Site of Fossil Cycad National Monument

Fossil Cycad National Monument was a national monument in the U.S. state of South Dakota beginning in 1922. The site contained hundreds of fossil cycads, one of the world's greatest concentrations. Because vandals stole or destroyed all of the visible fossils, it was withdrawn as a national monument in 1957. It is located in northwestern Fall River County, on U.S. Route 18, northeast of the city of Edgemont.