Despite the wanton destruction during the past 200 years, some outstanding sites have been saved in Louisiana,1 Mississippi,2 Alabama,3 Tennessee,4 I… - Graham Hancock

Indian thought has traditionally regarded history and prehistory in cyclical rather than linear terms. In the West time is an arrow—we are born, we live, we die. But in India we die only to be reborn. Indeed, it is a deeply rooted idea in Indian spiritual traditions that the earth itself and all living creatures upon it are locked into an immense cosmic cycle of birth, growth, fruition, death, rebirth and renewal. Even temples are reborn after they grow too old to be used safely—through the simple expedient of reconstruction on the same site. Within this pattern of spiralling cycles, where everything that goes around comes around, India conceives of four great epochs of "world ages" of varying but enormous lengths: the Krita Yuga, the Treta Yuga, the Davapara Yuga and the Kali Yuga. At the end of each yuga a cataclysm, known as pralaya, engulfs the globe in fire or flood. Then from the ruins of the former age, like the Phoenix emerging from the ashes, the new age begins.

It's not unreasonable [...] to suppose that some kind of cosmic "sky-ground" religion lay behind the alignments to the solstices and the equinoxes at Watson Brake and at the other early sites — a religion sufficiently robust to ensure the continuous successful transmission of a system of geometry, astronomy, and architecture over thousands of years.
John Clark is in no doubt. 'The evidence,' he says, 'suggests very old and widely disseminated knowledge about how to build large sites. The building lore persisted remarkably intact for so long that I think we can, and must, assume that it was part of special knowledge tied to ritual practice.'
Where did this special knowledge come from before it appeared at Watson Brake?

a team of Japanese engineers had recently tried to build a 35-feet-high replica of the Great Pyramid (rather smaller than the original, which was 481 feet 5 inches in height). The team started off by limiting itself strictly to techniques proved by archaeology to have been in use during the Fourth Dynasty. However, construction of the replica under these limitations turned out to be impossible and, in due course, modern earth-moving, quarrying and lifting machines were brought to the site. Still no worthwhile progress was made. Ultimately, with some embarrassment, the project had to be abandoned.175