That page on the Hebrew inscriptions is potentially very interesting, if it has been credibly confirmed.
"Near the end of the 1989 Gran Vilaya expedition, Savoy and his team of intrepid explorers came upon a set of inscribed tablets on the outskirts of the city, hidden away high in a cliffside cave. Among the many inscriptions contained on these large dolmen-type tablets was a symbol similar to the one used by King Solomon to mark the ships he sent to the land of Ophir to recover gold and precious stones for his temple in Jerusalem. Other symbols in the inscriptions appeared to be of proto-Sinaitic origin as well. So it is that Savoy is now engaged in a seven-year voyage to document links between the high civilizations of ancient times on the seven continents and to determine the true location of the biblical land of Ophir."
I find this possibility intriguing. May explain the Chachapoyas.(?)