Mysteries :
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For serious discussion of the controversies, approaches and enigmas surrounding the origins and development of the human species and of human civilization. (NB: for more ‘out there’ posts we point you in the direction of the ‘Paranormal & Supernatural’ Message Board).
My biggest problem comes down to building materials and erosion. I.e. if you can't or don't have the technology to cut stone in the same fashion of the examples in front of you then you do the best you can mud brick or possibly removing the limestone from other pre existing structures. When you look closely at megoliths of Peruvian culture you see they built on top of foundations that were made much better.
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