For more information on Ohio’s mounds, call 1-800-BUCKEYE and ask to speak to a counselor who can provide hours of operation, phone numbers, and locations. The Ohio Historical Society in Columbus has a splendid exhibit on local prehistory, and their education department (614-297-2600) will also answer questions. A popular show at the planetarium of Ohio’s Youngstown State University demonstrates how earthworks were aligned to the sun (216-742-3616). In West Virginia, Grave Creek Mound State Park is a fifteen-minute drive south of Wheeling; its Delf Norona Museum and Cultural Centre houses a fine collection of artifacts that help shed light on the Adena people and the mounds they built (304-843-1410).