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Mount Deception is the second highest peak in the Olympic Mountains, located in Olympic National Park in Washington State. It rises to an impressive elevation of 7,788 feet (2,374 meters) and is situated east of Mount Olympus, the highest peak in the range. Despite its somewhat misleading name, Mount Deception is no mirage—it offers some of the most rugged and rewarding alpine experiences in the Pacific Northwest. While not directly located in the city of Olympia, it is part of the Olympic region, which is easily accessed from the state capital. The mountain is known for its challenging terrain, glacial valleys, and dramatic views, making it a sought-after destination for experienced hikers, backpackers, and climbers.
Reaching Mount Deception requires planning and physical effort. From Olympia, drive north on U.S. Route 101 toward Sequim or Port Angeles. The most common access point is the Dosewallips River Trailhead, reached by heading west on Dosewallips Road (Forest Service Road 2610) from Brinnon. Please note that the Dosewallips Road is partially washed out and hikers must walk an additional 5 miles to the trailhead if starting from the closure point.
From the Dosewallips Trailhead, hikers follow the Dosewallips Trail into the Olympic backcountry, heading toward Lost Basin and Deception Basin. The final approach to the summit involves off-trail travel, route finding, and in some cases, scrambling over steep rock and scree. Because of the difficulty and remoteness, Mount Deception is best suited for experienced climbers and mountaineers.
Mount Deception is known for its variable and often harsh weather, especially at higher elevations. In summer (June to September), temperatures range from 40°F to 70°F (4°C to 21°C), with occasional rain, fog, or snowstorms even in mid-summer. Winter and early spring bring heavy snow, ice, and cold winds, making travel extremely difficult or impossible without alpine climbing skills and proper equipment.
The best weather window for visiting is during July and August, when trails are mostly clear of snow and days are longer. However, because the Olympics are known for unpredictable weather, hikers should always check forecasts, carry gear for sudden weather changes, and be prepared to turn back if conditions worsen.
The ideal time to visit Mount Deception is during the summer season, between July and early September. During this period, most of the snow has melted from the trails, and stream crossings are less hazardous. Attempting the hike or climb outside of this window can be dangerous due to snowfields, ice, and avalanche risk.
Starting early in the morning is recommended for any summit attempt, as weather is generally calmer and visibility better. Most climbers and backpackers take 2 to 4 days to complete the round trip, including overnight stays in the wilderness. Day trips to the summit are rare and extremely strenuous.
Mount Deception is famous for being the second tallest peak in the Olympic Mountains and one of the most challenging non-technical climbs in Olympic National Park. Its name stems from its deceptive appearance from certain angles—its summit is often obscured by surrounding ridges, misleading climbers about its true location.
For residents and outdoor enthusiasts from Olympia, Mount Deception represents the wild, remote beauty of the Olympic Peninsula. Its dramatic cliffs, glacial cirques, and isolation make it a crown jewel for serious adventurers. The nearby Deception Basin and Lost Basin offer additional scenic wonders, making the area a treasure trove of alpine exploration.
Mount Deception is within Olympic National Park, so a valid National Park Pass or America the Beautiful Interagency Pass is required for entry. You may also need to obtain a wilderness camping permit if you plan to stay overnight. Permits can be reserved online through the National Park Service’s Recreation.gov system.
There are no fees specific to Mount Deception, but trailhead access and overnight stays in the park require permits. Be sure to follow all Leave No Trace principles, and pack out everything you bring in. Fires are not permitted in many high-elevation areas, so plan for cold meals or bring a portable stove.
Mount Deception has long fascinated geologists and explorers. It was originally named by the Seattle Press Expedition in the 1880s. As they explored the range, the expedition members were often confused by the appearance of the peak, hence its name.
The mountain and surrounding valleys were carved by glaciers during the last Ice Age, leaving behind sharp ridges, steep valleys, and alpine lakes. Today, visitors can witness remnants of small glaciers and snowfields clinging to the upper slopes of the mountain. Wildlife such as mountain goats, marmots, black bears, and deer are common in the area, and wildflowers blanket the meadows in summer.
Mount Deception offers a variety of outdoor experiences for those up to the challenge:
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Mount Deception is a rewarding and unforgettable destination for serious adventurers. Although it requires significant effort to reach, the rewards include awe-inspiring vistas, solitude, and the pure alpine experience that defines the Olympic backcountry. For those based in Olympia or visiting Washington State, tackling Mount Deception offers a true wilderness escape.
