Arthur Posnansky (1873–1946), often called "Arturo", was at various times in his life an engineer, explorer, ship’s navigator, director of a river navigation company, entrepreneur, La Paz city council member, and well known and well respected avocational archaeologist. During his lifetime, Posnansky was known as a prolific writer and researcher and for his active participation in the defense and development of Bolivia. He is well known for his books, including Tihuanacu, the Cradle of American Man, Campana de Acre, La Lancha "Iris", Die Osterinsel und ihre praehistorischen Monumente, and Razas y Monumentos Prehistóricos del Altiplano Andino. Many, if not most, of his theories have been rejected by modern scholars.
