This is in service of Foerster’s new master-thesis which, shockingly, deviates from the ancient astronaut theory and instead embraces the Atlantis-Lemuria-Mu branch of alternative archaeology:
“My theory, partly based on Thor Heyerdahl of Kon Tiki fame’s work, is that there were master seafarers in the Pacific prior to the Polynesians, who mixed with these people, and their origin was ancient South America, as in Peru and Bolivia, where we find an abundance of megalithic remains attributed to the much later Inca culture.”
This is an old theory that has been gone over time and again and churned up absolutely nothing useful. It is based on two flawed pillars: First, the nineteenth-century idea that the megalithic temples of the Pacific islands were too sophisticated for brown-skinned people to have built and were therefore the remnants of a prehistoric civilization more than 3,000 years old, and, second, the equally spurious nineteenth century idea that the megalithic temples of Tiwanaku were too sophisticated for brown-skinned people to have built and were therefore the remnants of a prehistoric civilization more than 3,000 years old. Both theories were popular with “alternative” types, including Theosophy and Atlantis theorists, and both had a brief vogue in the middle of the twentieth century (due to Thor Heyerdahl and Arthur Posnansky respectively) before modern dating techniques conclusively disproved them.
There remains no shred of evidence that the monumental stone structures of South America are anywhere near as old as alternative theorists claim.
But, at least, Foerster is moving in the right direction. This time it’s humans rather than aliens to which he attributes every facet of prehistoric culture. Now if only he'd give up on the idea that aliens were impregnating ancient women with deformed babies...
Of course, if he did that, he wouldn't be making money from his 10 books of alternative history or the for-profit "ancient alien" tours of South America he leads for believers.