Obstruction Pass State Park

Obstruction Pass State Park: Orcas Island’s Hidden Gem with Rainbow Pebble Beach and Primitive Island Camping

Obstruction Pass State Park offers the most secluded camping experience on Orcas Island in Olga, featuring 76 acres of pristine wilderness accessible only by half-mile hike to reach the island’s longest publicly accessible beach. This hidden sanctuary promises visitors a spectacular crescent of ocean-smoothed, marble-sized pebbles in rainbow colors that creates one of the San Juan Islands’ most unusual shorelines, plus nine primitive walk-in campsites overlooking the water with stunning views of Blakely Island and the surrounding archipelago.

Obstruction Pass State Park Fast Facts

Park Overview

Obstruction Pass State Park encompasses a secluded island wilderness at the southern tip of Orcas Island, where visitors must hike half a mile through low forest to reach one of the San Juan Islands’ most remarkable beaches. The park’s defining character centers on its extraordinary shoreline composed of ocean-smoothed, marble-sized pebbles in rainbow colors that create a crescent beach unlike anywhere else in the archipelago. This 76-acre sanctuary offers genuine wilderness camping with nine primitive walk-in sites positioned to overlook the water, providing spectacular views of Obstruction Pass, Blakely Island, and the surrounding marine landscape.

This remote destination serves adventurous visitors seeking authentic island camping and hiking experiences away from crowds, with no running water, electricity, or developed amenities that require self-sufficient outdoor skills. The park’s trail system winds through upland forests of Douglas Fir, Western Red Cedar, and Madrona before descending to the extraordinary pebble beach that makes this location a true hidden gem in the San Juan Islands.

Activities & Recreation

Facilities & Amenities

Obstruction Pass State Park maintains minimal primitive facilities designed to preserve the wilderness camping experience while providing essential services. The park features two composting toilets serving both day-use and camping areas, with no running water requiring visitors to bring all necessary water supplies. Each of the nine walk-in campsites includes a fire pit for campfires and cooking, positioned strategically to provide water views from many sites. One day-use picnic table serves visitors not camping overnight, available first-come, first-served. Three mooring buoys located offshore accommodate boat-in visitors, with phone registration available and moorage fees charged year-round from 1 p.m. to 8 a.m.

Camping & Accommodations

The park offers exclusively primitive camping with nine walk-in campsites available first-come, first-served, requiring a half-mile hike through forest to reach the camping area near the beach. One designated Cascadia Marine Trail campsite serves kayakers and small boat users arriving by water, also available first-come, first-served. All campsites feature fire pits and many provide water views overlooking Obstruction Pass and Blakely Island, creating an idyllic setting perfect for introducing families to backpacking experiences. The primitive nature means no reservations are accepted, no running water is available, and visitors must pack out all trash following leave-no-trace principles.

Planning Your Visit

Obstruction Pass State Park operates year-round with access via trail only, requiring visitors to plan for the half-mile hike carrying all gear and supplies to reach camping and beach areas. No running water or trash collection services are available, making this a pack-in, pack-out destination requiring self-sufficient camping skills. The park’s remote location at the southern end of Orcas Island means visitors should plan ferry reservations well in advance, especially during peak summer season. Weather can change quickly on the water, and visitors should check marine forecasts before arriving by boat or kayak.

What to Bring & Know

• All necessary water supplies as no potable water is available anywhere in the park
• Complete camping gear including food, cookstoves, and all supplies for primitive camping experience
• Sturdy footwear for the half-mile trail through forest terrain and walking on unique rainbow pebble beach surfaces
• Camera equipment for capturing the extraordinary marble-sized rainbow pebbles and scenic island views
• Pack-out bags for all trash and waste following strict leave-no-trace principles in this pristine wilderness setting

Final Word

Obstruction Pass State Park delivers Orcas Island’s most secluded wilderness camping adventure, where a half-mile forest hike leads to extraordinary rainbow pebble beaches and primitive island solitude.

This park is part of the Explore Washington State Parks Directory—showcasing all of Washington’s State Parks from the rugged Pacific coast to the Cascade peaks. Whether you’re camping under old-growth forests, hiking scenic trails, or discovering local history, we’re highlighting the places where people connect with the state’s incredible natural and cultural heritage—all year long.