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Originally posted by dr treg
After watching a TV programme about Pioneers 10 and 11
and the plaques which were sent with them which would inform aliens of where we lived and what we looked like I wondered how
1. An alien race would leave clues on Earth that they had visited in the past.
2. A past terrestrial civilisation which left Earth prior to destruction e.g. by a severe flood would leave clues of their technological achievements and where they headed off to.
It seems that stone and gold were realised to be the least immutable substances a long time ago.
After visiting Egypt last year and reading about the lay-out of the pyramids and their interior structures as being related to the position of certain stars could it be that the pyramid lay-out and their interiors be a clue to where past visitors came from or where our ancestors went to?edit on 23-12-2010 by dr treg because: Difficulty with attaching image