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Keweenaw County

Mount Desor

Highlight • Summit

Mount Desor

Hiking

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Mount Desor is the highest point within Isle Royale National Park, a remote wilderness island located in Lake Superior, Michigan. Reaching an elevation of 1,394 feet (425 meters), it stands as the tallest mountain on Isle Royale and the third highest peak in the entire Lake Superior region. This significant landmark is situated along the Greenstone Ridge, a prominent geological feature that traverses the length of the island.

Hikers are drawn to Mount Desor for the challenge and unique experience…

This Highlight is in a protected area

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Isle Royale Wilderness

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    April 4, 2025

    Hiking

    Mount Desor is the highest point on Isle Royale, reaching 1,394 feet (425 meters). Located along the Greenstone Ridge Trail, it offers a challenging but rewarding hike through dense forest …

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    Nearby routes

    Best routes near Mount Desor

    4

    hikers

    #1.

    Mount Desor – Lake Desor loop from Carnelian Beach

    26.5km

    07:26

    540m

    540m

    Hard hike. Very good fitness required. Easily-accessible paths. Suitable for all skill levels.

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    Elevation 420 m

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    Saturday 4 April

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    Location: Keweenaw County, Michigan, United States

    Frequently Asked Questions

    What is the primary hiking trail to Mount Desor's summit?

    The main access to Mount Desor's summit is via the Greenstone Ridge Trail, which is the longest trail in Isle Royale National Park, spanning 45 miles (72 km) across the island. Mount Desor is a key waypoint along this extensive backpacking route.

    Are there any shorter or alternative hiking routes to Mount Desor?

    Mount Desor is quite remote, and the summit is typically reached as part of a longer backpacking trip along the Greenstone Ridge Trail. The nearest ferry landing is 8.5 miles (13.7 km) away, making it a significant hike even for a day trip. There are no distinct 'shorter' routes directly to the summit that bypass the Greenstone Ridge.

    What is the typical terrain difficulty for hiking Mount Desor?

    Hiking Mount Desor is considered challenging. The trail involves significant elevation gains and traverses rugged terrain characteristic of Isle Royale. Hikers should be prepared for varied conditions, including dense forest paths and potentially muddy or rocky sections. Sturdy footwear is highly recommended.

    Are there any panoramic viewpoints from Mount Desor's summit?

    Mount Desor's summit is densely wooded, which generally limits expansive, panoramic views. However, during late autumn after most of the foliage has fallen, it may be possible to catch glimpses of Lake Superior's Siskiwit Bay to the south. For most of the hiking season, the summit is more of a wilderness waypoint than a scenic overlook.

    How do I access Isle Royale National Park and Mount Desor, given it's an island?

    Access to Isle Royale National Park, and subsequently Mount Desor, is primarily by ferry or seaplane. There are no roads or bridges connecting the island to the mainland. Visitors must arrange transportation to one of the island's entry points, such as Windigo or Rock Harbor, and then hike to Mount Desor.

    Are permits required to hike Mount Desor or camp in Isle Royale National Park?

    Yes, visitors to Isle Royale National Park, including those hiking to Mount Desor, are required to pay an entrance fee. Additionally, backcountry permits are mandatory for all overnight stays in the park's wilderness areas. These permits help manage visitor impact and ensure a quality wilderness experience.

    Is Mount Desor suitable for winter hiking?

    Isle Royale National Park, including Mount Desor, is typically closed to visitors during the winter months (approximately November 1 to April 15) due to extreme weather conditions and lack of services. Access is not available, and winter hiking is generally not feasible or permitted.

    Are there family-friendly hiking options near Mount Desor?

    Mount Desor itself is part of a challenging, remote wilderness experience, making it less suitable for young children or those seeking short, easy walks. The 8.5-mile hike from the nearest ferry landing is substantial. However, Isle Royale National Park offers other shorter, less strenuous trails near its visitor centers that might be more suitable for families.

    Is Mount Desor or Isle Royale National Park dog-friendly?

    No, pets are generally not permitted in Isle Royale National Park, including on trails to Mount Desor. This policy is in place to protect the park's unique ecosystem and wildlife from potential diseases, predation, and disturbance. Service animals are an exception, but specific regulations apply.

    What kind of wildlife might I encounter near Mount Desor?

    Isle Royale National Park is famous for its wilderness and wildlife. Hikers near Mount Desor may encounter moose and wolves, which are the park's most iconic large mammals. Other wildlife includes red foxes, beavers, and various bird species. Maintaining a safe distance and not disturbing animals is crucial.

    Are there any facilities, like cafes or accommodation, near Mount Desor's summit?

    No, Mount Desor is located in a remote wilderness area. There are no facilities, cafes, or accommodation directly at or near the summit. Hikers must be self-sufficient, carrying all necessary water, food, and gear. Basic services and lodging are only available at the park's main entry points, Windigo and Rock Harbor, which are a significant distance away.

    What is the geological significance of Mount Desor and the Greenstone Ridge?

    Mount Desor is part of the Greenstone Ridge, a significant geological feature of Isle Royale. This ridge is composed of ancient volcanic rock, primarily basalt, formed over a billion years ago. The rugged terrain around Mount Desor displays evidence of this volcanic activity and subsequent glacial movements, contributing to the island's unique landscape.

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