There was an attempt to reconstruct the way the Stonehenge trilithons were erected -- someone is saying that the reconsturction did not use a tenon, and that it would have been impossible to do if they did.
The actual quote is:
"Then, they used a huge frame work, hoisted the lintel to the top (I
forgot how they did that) but the point is, is that the English
experimenters SLID the lintel onto the top of the great upright. The
English concrete copy of the great upright did not have a Tenon, which
made that possible. But if it did have the tenon as the real one at
Stonehenge has, that would have been an impossible move. That makes
the English experiment a no go - a failure.

Apparantly, the only way the Neolithic Astronomers did it, was to lift
the lintel over the top of the upright, position it directly over the
upright and then carefully lowered the linel into place - much much
different than the English experiment did.

So that means, that the Ancient Neolithic Astronomers must have had
some kind of amazing unknown ability - which I think must have been
super human, or maybe super natural or even Extra Terrestrial."

!!! Any comments? Did they (the people who did the reconstruction) use a tenon?

Doug