Pumapunku is a terraced earthen mound, faced with blocks and an important part of the Tiwanaku archaeological site on the Bolivian Altiplano. It has unique architectural features including the use of building blocks with up to 80 faces on them. The Tiwanaku site is pre-Inca and has given its earliest radiocarbon date as 536-600 BC and was in use until circa 1000 AD(a), which is a far cry from the flawed 12,000-15,000 BC date claimed by Posnansky(e)(f).
As with so many other enigmatic ancient sites, various members of the ‘lunatic fringe’ have attributed the construction at these location to either ancient astronauts or atlanteans or an exotic combination of both, based on either over fertilised imaginations or flawed data or again, both. Jason Colavito has written a critique of some of the more silly suggestions(b).
Ancient astronaut advocate Von Däniken[1147.221] and Brien Foerester(d) among others, have claimed that the stones of Pumapunku were composed of diorite, an exceptionally hard stone, which would have required a modern diamond-tipped drill to work it. The implication being that only Atlanteans with their advanced technology or extraterrestrials could have worked the stone with such precision.
However, Colavito and Michael Heiser(c) have pointed out that this identification is untrue and that in fact they were composed of the softer andesite and red sandstone. Apart from which, the Code of Hammurabi was incised on diorite, without Atlantean or extraterrestrial assistance, 2,000 years before the development of Pumapunku!
Javier Escalante Moscoso is an architect with a degree in archaeology who has extensively excavated and surveyed the Tiwanaku monuments.(see map above).
*(c) See: http://atlantipedia.ie/samples/archive-2803/*
Survivors of the Atlantean destruction are a reasonable expectation given the extent of its influence as described by Plato. The fact that its rulers only met every few years suggests a geographical spread that must have left some, if not most, of the confederation intact, irrespective of the location of the earthquake’s epicentre. Some writers have proposed that survivors migrated to an extensive range of locations such as Egypt, the Middle East and the Americas, but offer little to substantiate their claims apart from the widely dispersed flood myths that are most likely to have arisen following the melting of glaciers at the end of the last Ice Age.
*All the suggestions put forward are either pure speculation, invention or allegedly derived from some psychic source. W. Scott-Eliot claimed  that refugees from an Atlantic Atlantis fled westward to Mexico and became the Toltecs and eastward and built Stonehenge ln Britain! While other European cultures have also had Atlantean roots attributed to them, the most frequently named are the great civilisations of Central and South America – Aztec, Mayan and Incan. Posnansky went as far as to suggest that Tiwanaku in the Andes was built by Nordic refugees from Atlantis! Proof, however, is lacking in all cases.*