Case file · Sacred site
Posnansky's 17,000-year-old Tiwanaku
Engineer Arthur Posnansky's 1945 'Tihuanacu, the Cradle of American Man' dated Tiwanaku to about 15,000 BC from the supposed astronomical alignment of the Kalasasaya.
1945 CE · -16.55, -68.67 · status: explained
The account
His dating became a pillar of Atlantis and ancient-astronaut literature about Tiwanaku and Puma Punku.
The sceptical view
Radiocarbon dating places Tiwanaku's monumental building between roughly AD 500 and 1000; Posnansky's alignments assumed a precise orientation the walls do not have.