Seaquest State Park

How does Seaquest State Park in Castle Rock, Washington, redefine a typical camping experience? Located just off State Route 504, this heavily forested 475-acre campground offers direct proximity to the serene wetlands of Silver Lake and magnificent views of Mount St. Helens, while catering to diverse camping styles with options ranging from traditional tent sites to full-hookup RV spots and cozy woodland yurts.

The campground is meticulously designed to blend comfort with immersion in nature. It features 52 standard campsites, 33 sites with partial or full hookups, three hiker/biker spots, and five heated yurts equipped with electricity. Amenities include restrooms, showers, a dump station, and accessible facilities, ensuring convenience for all. For recreation, visitors enjoy over seven miles of hiking trails—including an ADA-accessible boardwalk trail—offering tranquil water views and opportunities for wildlife spotting. A pedestrian tunnel links the campground to the Mount St. Helens Visitor Center and a boardwalk trail teeming with ducks, herons, and other wildlife.

Located just six miles from the town of Castle Rock, the park is ideally situated for day trips to the Mount St. Helens National Volcanic Monument or fishing and kayaking on Silver Lake. The tranquil setting, combined with educational opportunities and well-equipped facilities, makes it perfect for family outings, nature retreats, or roadside stopovers.