Park entrance fee Mar.-Nov. $10 (per private out-of-state vehicle); $5 (per private in-state vehicle); free (rest of year). Center free. Tour fees vary according to type of tour.
Daily 9-5, mid-June through Labor Day; daily 9-4, day after Labor Day-Nov. 30 and Mar. 1 to mid-June; Wed.-Sun. 9-4, rest of year.