Mount St. Helens National Volcanic Monument preserves a 110,000-acre natural area surrounding the iconic Mount St. Helens, known around the world for its dramatic 1980 eruption. The monument was established two years after the event to protect sensitive natural areas affected by the eruption and to promote research into the effects of volcanic eruptions. Park visitors can climb to the summit of the volcano with permits or enjoy stunning photo opportunities from the Windy Ridge overlook, considered to be one of Washington's best scenic drives. Several visitor centers in the park offer geologic exhibits, documentary films, informational interpretive trails, and ranger-led programming. Visitors can also explore the Ape Cave lava tubes, the contiguous United States' longest continuous lava tube, via the designated National Recreation Trail Ape Cave Trail.

3029 Spirit Lake Hwy, Castle Rock, WA 98611, Phone: 360-449-7800

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