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.
Bolgar. en This is illustration of Bolghar ruins from book russian writer Svin'in ru google id RRBAAAAYAAJ dq inauthor BD BD hl ru source gbsnavlinkss PDold Buildings in Bolghar
Page 2023 Free-images.com. All images are Public Domain