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Thermal Springs In Okmok Caldera

AK212°F

About Thermal Springs In Okmok Caldera

Thermal Springs In Okmok Caldera is a rare, high-temperature hot spring nestled within Alaska’s volcanic landscape. With water reaching a scorching 212°F (100°C), it delivers an intense geothermal experience unlike many of the more temperate hot springs in Alaska. Its location inside a dramatic volcanic caldera adds an extraordinary natural backdrop to your visit.

Getting There

Access to Thermal Springs In Okmok Caldera requires careful planning and a robust approach. Situated on the remote Umnak Island, you must arrange chartered transport, often by boat or plane. Once on the island, reaching the spring involves rugged hiking over volcanic terrain without marked trails, demanding physical readiness and navigational skill.

What to Expect

This spring’s water is boiling hot, so you won’t find typical soaking pools here; instead, step back to appreciate the intense geothermal activity and simmering vents. The atmosphere is wild and untamed, offering solitude far from crowded Alaska swimming holes. There are no facilities, emphasizing the primitive, unspoiled nature of this natural feature.

Tips for Visitors

Bring sturdy hiking boots, detailed maps, and a GPS device to navigate safely around the caldera. Avoid direct contact with the water due to extreme temperatures, but explore the surrounding steam vents in cooler, safe areas. Plan your trip during summer months when weather conditions are more favorable, and always respect local regulations protecting this fragile volcanic environment.

Last updated December 20, 2025

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