Civilian Conservation Corps (CCC) Company 503-stationed at Camp Pike near Morgantown-built a museum and trails to improve access to Serpent Mound. Serpent Mound is an effigy mound built in the image of a snake by one of the ancient Native American societies that inhabited Ohio. Today, the Ohio History Connection manages Serpent Mound. It is a National Historic Landmark and a UNSECO World Heritage site.