This relates to an earlier post concerning how the ancients may have built the megalithic structures of old,,,posits an interesting but plausible explanation,,,
Wally Wallington has demonstrated that he can lift a Stonehenge-sized pillar weighing 22,000 lbs and moved a barn over 300 ft. What makes this so special is that he does it using only himself, gravity, and his incredible ingenuity.
What Wallington and Heyerdahl demonstrate (and Leedskalnin to a degree) is that the technology to move the massive megalithic stones was present in ancient times,,,it just may be so simple we over look it