$7 (per private vehicle, up to four passengers); $3 (per additional adult passenger in vehicle or person arriving on foot or bicycle); free (with tour reservation). Rotunda/Throne Room tour or Big Room tour $23; $13 (ages 7-13). Ages 0-6 are not permitted on Big Room tour. Headlight and Helmet Tour $30. Ages 0-9 are not permitted on Headlight and Helmet tour. Camping $30. Rates may vary; phone ahead. Reservations are recommended.
Park open daily 6 a.m.-10 p.m. Discovery Center daily 8-6, late Dec.-May 30; 9-5, rest of year. Rotunda/Throne Room tours are offered all year and Big Room tours are offered Oct. 15-Apr. 15. Headlight and Helmet Tour on Sat. Times vary, phone ahead. Closed Christmas.