Claim: Ukinrek Maars is a part of the Aleutian Range (a major mountain range located in southwest Alaska) in Becharof National Wildlife Refuge, elevated at 299 ft with its last erupted between March and April in 1977.
Evidence: Aleutian Range The Aleutian Range is a major mountain range located in southwest Alaska. Becharof National Wildlife Refuge, Alaska, on Alaska Peninsula 299 ft (91 m) March to April 1977