Ingakslugwat Hills

Ingakslugwat Hills is a volcanic field in western Alaska's Yukon–Kuskokwim Delta, about 35 miles north of Baird Inlet. Covering roughly 500 square kilometres, it contains eight large craters, around thirty smaller pyroclastic cones, and unusual pyroclastic ridges known as the Ingakslugwat volcanoes. These ridges, along with cone sizes ranging from very small to prominent elevations above the plains, make the field especially distinctive. Composed mainly of basaltic rocks, the field erupted between about 1 million and 700,000 years ago, though some activity may be as recent as the Holocene. Its landforms likely formed through magma interacting with permafrost, creating an important example of hydrovolcanic terrain in frozen ground.

Newtok, Alaska · United States