Devil Mountain Lakes

Devil Mountain Lakes is a maar in the western part of Alaska. The lake is considered to be the largest maar in the world; it is part of the Espenberg volcanic field. Devil Mountain Lakes is located about 100 km southwest of Kotzebue on the northern part of the Seward Peninsula. The coordinates are 66°23′41″N 164°29′18″W / 66.39472°N 164.48833°W.
Data from: en.wikipedia.org