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.
Petr Shirshov. ru atexpo ru author other versions Custom marker PDOld Uploaded with Explorers of the Arctic Members of the Academy of Sciences of the USSR Expedition North Pole
Page 2023 Free-images.com. All images are Public Domain