Nabta Playa is a megalithic site situated 100 km west of Abu Simbel. It is the only known megalithic circle in Egypt, although in this instance ‘megalithic’ may be a misnomer as the components could have been erected by one person. A number of astronomical alignments have been identified at the site(a) .
Although first rediscovered in 1974, it became known to a wider audience when astrophysicist Thomas G. Brophy published his book, The Origin Map in 2002. The importance of Nabta Playa was further highlighted in a 2010 book by Robert Bauval & Thomas G. Brophy, Black Genesis. In it, they argue that the dark-skinned creators of Nabta Playa were the ancestors of the Egyptian culture, who migrated eastward as the Sahara dried up. The book has been reviewed favourably by Bruce Jeffries-Fox(b) and very critically by Jason Colavito in four parts(c-f) . This was followed in 2012 by another book from Bauval & Brophy, Imhotep the African, in which they explore further the development of ancient Egypt, particularly the part played by Imhotep.
Atlantrope in spite of its name has no connection with Atlantis. It was in fact the name of an enormous dam building project first proposed in 1928 by the German architect Herman Sörgel (1885-1952). Ironically, he was hoping to create artificially what some think had existed in reality and within the memory of man and whose destruction may have led to the destruction of Atlantis.
His idea was to create dams at Gibraltar, the Dardanelles and the Strait of Sicily and gradually reclaim land by lowering the level of the Mediterranean and incorporate hydro-electric plants into the scheme(a)(b). He went further and suggested flooding large sections of the Sahara Desert. For a few years after Sörgel’s death, efforts were still being made to gain support for the idea.
Sörgel’s proposal was briefly referred to in SKY TV’s second series of The Man in the High Castle.