Visitor center free. Museum $6; $5 (ages 65+); $4 (ages 7-12).
Park daily dawn-dusk. Visitor center and museum Tues.-Fri. 9-4, Sat. 1-4, mid-Apr. to mid-Oct. Last tour begins 30 min. before closing. Closed Memorial Day, July 4 and Labor Day. Phone ahead to confirm schedule. Allow 1 hour minimum.