excuse me if this has already been discussed in detail but there is mention in the Megalithic European of Ephedra and how there is evidence of ephedra being shifted accross continents all those years ago. Ephedrine is a body building drug used to provide a trance like focus for the purpose of total physical exertion. The point of my post is to suggest that neolithic man/woman used ethedra as the fuel of focussed stone shifting rituals. If everyone was focussed and on the same thing on the same substance they could do all kinds of amazing things. A bit like a constructive rave.