This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Volcanic crater at Ingakslugwat hills. en br Image title Volcanic crater at Ingakslugwat Hills in Alaska USA Image from Public domain images website publicdomainimage html publicdomainimage This photo can also be viewed at Fish and Wildlife Service web page fws gov Calvin Lensink Fish and Wildlife Service Transferred by