Aniakchak National Monument and Preserve
National Monument · King Salmon, Alaska
One of the most remote and least-visited units in the entire National Park System — fewer than 100 people visit each year. The 600,000-acre monument on the Alaska Peninsula preserves the massive Aniakchak Caldera, a 6-mile-wide volcanic crater that last erupted in 1931. Access is by float plane only, and the brutal weather frequently grounds aircraft for days.
Alaska Peninsula, King Salmon, Alaska, 99613, United States
Open year-round but only realistically accessible mid-July to mid-September. No facilities on site.
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