Geography

Most of the park section is designated as wilderness. The eastern part of the park near the Cook Inlet includes two active volcanoes, Mount Redoubt and Mount Iliamna. A third, Mount Spurr, is just outside the park to the east. The chief river in the park is the Kvichak River. Another large river, the Tlikakita, runs across the park from its source at Summit Lake to Lake Clark, emerging from the lake and the park as the Newhalen River.

Lake Clark is the largest lake in the park, on the southwest corner of the park. The national preserve lands adjoin park lands on the west, offering both subsistence and sport hunting, in contrast to parklands, where only subsistence hunting by local residents is allowed. The extreme southwest section of the preserve includes Alaskan Native corporation lands, which are not open to the public.