Hot Spring On Tanaga Island
This Aleutian hot spring emerges from a volcanic island in the western chain where three stratovolcanoes dominate the skyline and geothermal activity manifests across rugged terrain. Water designated simply as hot in historical records, it sits at 900 feet elevation in a protected wildlife refuge with restricted access.
The spring flows on Tanaga Island, where three major stratovolcanoes create a distinctive landscape. At 900 feet elevation, approximately 13 miles from any road trace, the spring sits in open volcanic terrain with active geothermal features scattered across the island. The environment features classic Aleutian characteristics—volcanic peaks, exposed rock, harsh weather, and limited vegetation.
Access is restricted to protect ecological and geological values; permits required from US Fish and Wildlife Service. The spring lies under permanent protection in the Alaska Maritime National Wildlife Refuge. Average annual air temperature reaches 37.2°F with 55 inches of precipitation and 96 inches of snow. Visitors must reach the island by boat and be completely self-sufficient.
This hot spring formed through active volcanic geothermal systems on Tanaga Island in the western Aleutian chain. The island sits at a convergent plate boundary where intense geological activity produces volcanic eruptions and vigorous thermal manifestations. The spring's continued thermal output demonstrates the deep geothermal heat source beneath this volcanically active landscape.
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Hot Spring On Tanaga Island requires a hike to reach, so pack light but prepared. Cold air temperatures make a changing robe or warm layers essential.
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