Effective January 2024, Serpent Mound will offer two archaeological tours a month with archaeologist Bill Kennedy on the 2nd and 4th Fridays of each month during the 2024 season. Tours begin at the Serpent Mound Visitor Center at 1:30 p.m. and end at 3 p.m. No reservations are required. Parking is $8/per vehicle. Info: (800).752.2757