Daily 9-6, Memorial Day to mid-Aug.; Mon.-Fri. 11-5, Sat.-Sun. 9-6, mid-Aug. through Labor Day; Mon. and Fri. 11-5, Sat.-Sun. 9-5, day after Labor Day to mid-Oct.; Sat.-Sun. 9-5, early May-day before Memorial Day and mid- to late Oct. Last tour departs 1 hour before closing. Phone ahead to confirm schedule and Wild Cave tour departure time.