Thanks for the stimulation. Having traveled extensively in South America, which included traversing the enigmatic Lake Titicaca in a reed boat, I found your post to be of special interest.
Three notions deserve mention....
First, I have never collected reliable, esoteric information on ET exploitation. Hence, I have no viewpoint on that possibility and am open-mindedly agnostic. My research only stretched back 15,000 to 20,000 years before present.
Second, Incan sources from centuries ago attributed their huge stone structures to an ancient, pre-Incan race of “giants”. Some esoteric lore refers to the height of those from the lost civilization as usually having been 5 1/2 to 6 cubits (with an 'average' of more than 8.5 feet in our linear measurement units). So I find the notion of giants in antiquity plausible but know of no convergent evidence of beings in the past who were much taller than 9 feet.
Third, from Wikipedia: “Esoteric knowledge, in the dictionary (non-scholarly) sense, is thus that which is available only to a narrow circle of 'enlightened', 'initiated', or specially educated people. In contrast, exoteric knowledge is knowledge that is well-known or public; or perceived as informally canonic in society at large.” Throughout my books, Gnostic lore and esoteric lore are used interchangeably for convenience, yet they are far less than fully identical. In particular, “Gnostic” lore signifies a mostly unknown vein of concealed wisdom; yet, it is often confused with an historical branch of Christian theology well-known to academics. And although Gnostic lore is primarily esoteric, only a small portion of esoteric lore is “Gnostic” in nature (as I adopted the term to refer to a nameless, dispersed body of ancient awareness). Still, there is sufficient overlap –in some respects– that making continual distinctions is unnecessary in my view.
Thanks for the intriguing link. I am eagerly awaiting Ross Hamilton's new book on the same 'huge' subject. LOL.