Located in western Azerbaijan,near the Caspian Sea, the Gobustan Rock Art Cultural Landscape is filled with art that traces the history of humanity in Eurasia from the Paleolithic era to the Middle Ages. There are more than 6000 pieces of art at the site, and with representations of plants,animals, and various human cultures.
The Norwegian explorer and adventurer Thor Heyerdahl visited this site in Azerbaijan four times between 1981 and 2000. He visited Gobustan (approximately 30 miles from Baku) and was convinced that some of the carvings were similar to those made by Vikings.
Source: atlasobscura.com