Gareloi Island: Remote Volcanic Wilderness in Alaska’s Aleutians

Why Gareloi Island Rewards the Journey

Gareloi Island sits in the western Aleutian chain, a 10-kilometer-wide stratovolcano rising sharply from the Bering Sea. Its isolation preserves one of Alaska’s most intact volcanic landscapes, free of roads, settlements, or commercial development. Visitors come for the raw geology, massive seabird colonies, and the sense of standing on a frontier few ever reach.

Geology and the Active Volcano

The island’s centerpiece is Gareloi Volcano, which rises 1,573 meters and has erupted multiple times in the past century. Steam vents and colorful mineral deposits mark recent activity on the upper slopes. Lava fields and cinder cones cover the southern half, while northern cliffs plunge directly into the ocean. These features create a compact laboratory of volcanic landforms that can be explored on foot during clear weather windows.

Wildlife and Marine Life

More than 100,000 seabirds nest on the steep cliffs each summer. Tufted puffins, least auklets, and northern fulmars dominate the colonies. Harbor seals and Steller sea lions haul out on rocky beaches, and occasional gray whales pass through the surrounding waters. The island forms part of the Alaska Maritime National Wildlife Refuge, so all wildlife must be viewed from a respectful distance.

Getting to Gareloi Island

Access begins with a flight to Adak or Dutch Harbor, followed by a multi-day boat charter or small-plane drop-off. Weather windows dictate all travel; pilots and skippers wait for calm seas and clear skies. Once on the island, visitors must be fully self-sufficient with tents, food, and emergency communication gear.

Best Time to Visit

June through early September offers the longest daylight and mildest temperatures. Snow lingers on higher slopes into July, and frequent fog can ground planes or delay boats for days. Outside this window, winter storms and darkness make visits impractical.

Activities on the Island

• Day hikes to the crater rim when visibility allows, following established game trails.
• Coastal walks to observe seal haul-outs and cliff-nesting birds.
• Photography of steam vents, lava flows, and the dramatic coastline.
• Wilderness camping on sheltered gravel beaches.

Permits are required through the U.S. Fish and Wildlife Service for any overnight stay.