It's a shame that scholars ignore the ancient writers like Plato, except when they are in accordance with current 'facts'. But if it upsets evolution theory or established chronology then they are just telling fanciful stories. Herodotus talks of a different Nile but they say it's not possible.
"And they told me that the first man who ruled over Egypt was Men, and that in his time all Egypt, except the Thebaic canton, was a marsh, none of the land below lake Moeris then showing itself above the surface of the water?
"(Men).......it was he who raised the dyke which protects Memphis from the inundations of the Nile. Before his time the river flowed entirely along the sandy range of hills which skirts Egypt on the side of Libya. He, however, by banking up the river at the bend which it forms about a 100 furlongs south of Memphis, laid the ancient channel dry, while he dug a new course for the stream half-way between the two lines of hills."
Would this last part pertain to the beautiful picture of the Giza plateau you posted on another thread?
I was very interested in the giant skulls you mentioned. I couldn't find anything on Posnansky finding them, but I did find David Flynn's article in which he says:
"The historian Arthur Posnansky studied the area for over 50 years and observed that sediment had been deposited over the site to the depth of six feet." "The skulls have nearly three times the cranial capacity of modern man and are displayed in the La Paz museum in Bolivia." (http://www.freerepublic.com/focus/f-chat/1977971/posts)
It took me a while but I tracked the skulls and here is a picture
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To be found on the museum's website [www.tiwy.com]
Evidently Flynn is talking about the elongated skulls which have been explained away by conventional experts. Well so they think. But they haven't been able to answer all the questions about them. And supposedly there is a fetus with an elongated skull on display somewhere else, which if true, would negate their explanations. Fat chance it will ever be announced in a newspaper or broadcast.