 The well-preserved sketches display ancient populations travelling on reed boats; men hunting antelope and wild bulls, and women dancing.The famed Norwegian anthropologist Thor Heyerdahl returned many times to Azerbaijan between 1961 and his death in 2002 to study the site in his "Search for Odin".The language of the ancient population of Gobustan is disputed, but the petroglyphs still give information about the lives of prehistoric people who lived there.