$15 (per private vehicle); $10 (per motorcycle); $5 (per person arriving on foot or by bike). Campsite rental $20.
Road open daily 6 a.m.-8 p.m., Apr.-Sept.; 6 a.m.-7 p.m. in Mar. and Oct.; 6 a.m.-5 p.m., rest of year. Visitor center daily 8-4:30 (8-noon on Thanksgiving and noon-4:30 on Christmas).