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:
Wrangell St. Elias National Park. Root Glacier in WrangellSt Elias National Park Alaska nps gov htm Tom Weber This is visitor photo however visitors sending images to the NPS for publication in the nps gov htm WrangellSt Elias National Park Preserve Photo gallery have to agree to put their images into the public domain Tom Weber