Nature
Kanuti Hot Springs is a geothermal spring in Alaska’s Kanuti National Wildlife Refuge, about 15 miles north of the Arctic Circle, in a remote area designated for critical environmental concern. Its mineral water emerges at roughly 110 to 151 °F, and colonies of cyanobacteria along the edges create white, yellow, and orange deposits that give parts of the site a vivid banded appearance. The spring’s heat comes from rainwater descending through a deep bedrock fracture, warming near magma, and returning to the surface through shallow rocks. Geologically, the springs are linked to granitic rocks of the hot springs pluton near the Caribou Mountain complex.
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Evansville, Alaska · United States
