Dogon people
The Dogon people are an ethnic group in Mali, West Africa, reported by some researchers to have traditional astronomical knowledge about Sirius that would normally be considered impossible without the use of telescopes. According to Marcel Griaule, they knew about the fifty-year orbital period of Sirius and its companion prior to western astronomers. In his pseudoarcheology book "The Sirius Mystery", Robert Temple claimed that the Dogon people have a tradition of contact with intelligent extraterrestrial beings from Sirius.