Main Source: https://www.futureofmankind.co.uk/Billy_Meier/Contact_Report_069
The Altiplano plateau in Bolivia (altitude 4000 m) which is home to Tiahuanaco and Puma Punku was (according to Semjase in CR 69:16) conquered by Viracocha, his followers and cherubim ) body guards - who arrived some 13,500 years ago (CR 69:13). This was at around the same time as Arus returned with his invasion troops. But the (11 m tall) Viracocha giants were not Plejaren but refugees who escaped the Lyrans (CR69:21). They subjugated and taught the local (Tiahuanaco and Easter Island) people who themselves were “procreations of earthlings with previously immigrated intelligences from the vastness of the universe”. We know that the Long Skulls were active on Earth for at least 389,000 years and that they were active in South America and other places on Earth. We know as well that many South Americans, maybe to show their descendance from them(?) intentionally practiced head deformation of newborns ()). So, we may surmise that the local people who were subjugated by Viracocha’s giants may have been a mix between Long Skulls and Earth humans. The giants “provided them with their own highly developed technology and taught them stone masonry and how to operate their devices and machines.” (CR 69: We know from Semjase that this led to the constructions and erection of the mysterious Easter Island heads/statues/oval shaped UFO replicas.
We know as well that several centuries later Viracocha’s giants were hit by a (viral?) plague which killed many. That they hurriedly fled our planet taking all their technology with them. But despite being able to leave our planet they may have all perished (CR 69:28-32) after leaving a last sign of life (SOS-like message) on an uninhabited planet in the Andromeda galaxy.
Thousands of years later, Viracocha's ‘last sign of life’ was found and those who discovered it visited our planet in (2,568 – 1975=) 563 BCE. They (avg. height 180 cm) delivered a message from the “giants of Tiahuanaco” and lived on our planet for 21 years and 7 months before being struck by the same mysterious plague as Viracocha’s giants which made them flee/disappear, too. But during their stay on our planet, they “established quite a high culture” building electrical energy centres, whose wiring they laid under the ground, protected by half-pipe channels” which makes historians for whom ETs are a No-No wonder where they come from .
It is unclear which ETs or ET-apparatuses helped in the construction of the colossal structures of Tiahuanaco and nearby Puma Punto, whether they were constructed ‘before 13,500’ by Long Skulls (who were able to move large stones into position by sound waves) or Viracocha’s giants (13,500 years ago) who instructed and assisted the locals to build the Easter Island structures) or the Andromedins (in 563 BC) during their 21 year 7 months stay on our planet. The latter two alternatives seem more plausible because the monumental structures in Tiahuanaco and Puma Punko leave the impression of being an unfinished city due to a rushed exit of the builders.
https://www.futureofmankind.co.uk/Billy_Meier/Contact_Report_069
*
***) Cherubim – angelic = bird-like (4 wings flying like a dragon fly) beings: **
The Cherubims seem more like fairy tale beings than being real: Head of a lion, bull, eagle or human with wings. But the bible describes them as serving the will of God and guarding the “Garden of Eden” which, if one considers Viracocha on Delta Island being treated like a god-like being may not far off the biblical description). Furthermore, they seem to be depicted in many ancient sculptures ^) as symbolic guardians of ancient kings. Even the Egyptian Sphinx (human headed lion, no wings) which guarded the pyramid (pharaoh) tombs of Giza may have been a derivation of the cherubim.
^) https://www.pinterest.de/pin/790663278355984745/
https://www.wordforwordbiblecomic.com/blog/the-appearance-of-cherubim
****) Cranial deformation predates history: **
https://en.wikipedia.org/wiki/Artificial_cranial_deformation