Cross Mound is an earthwork located near Tarlton, Ohio in the United States. The culture who built it and the time it was built remains unknown. It is listed on the National Register of Historic Places. Contemporary archaeologists have described it as "one of the many enigmatic effigy mounds in Southern Ohio."LocationThe site is located in Cross Mound Park, near a tributary of the Scioto River. The site totals 29-acres. To access the site, visitors must pass over a suspension bridge that was built in 1936.