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On ungroomed trails by permit only.
Can be reached in the summer from the Rim Drive on a paved, 6-mile (9.6 km) road. These eerie spires of eroded ash rise from the edges of Sand and Wheeler Creeks in pinnacle-fashion. On the way you'll pass Lost Creek Campground. Once upon a time, the road continued east of the turn-out, to the former East Entrance of the park. A path now replaces the old road and follows the rim of Sand Creek (and more views of pinnacles) to where the entrance arch still stands. A different route back to the Rim Drive, is to take the Grayback Road, a one-way, westbound only, gravel road.
Exhibits on geology and lake research, and a popular view of the lake.
Only for those who are willing to hike about 15 minutes down into the crater. Access is by 1.1 mile (1.8 km) Cleetwood Trail which descends 700 feet (213 m) to the lake surface. An additional ticket will get you onto Wizard Island. Once there you can explore the island, hike to the Witches Cauldron crater, or visit Fumarole Bay. The price can be expensive but it's well worth it.