[M.D. Holloway]

Basically the guy uses pivot points to balence huge stones to turn and move them into place. If you ever tried to move a 400lb drum of oil, just tip it on an edge and roll it along the edge. The edge is the pivot point. The trick is the balence but almost anyone can do it with a little practice and it doesn't require much strengh. Although I have seen certain idiots tip over a drum of oil because, well, they are idiots.

The large stones edge is first lifted with levers. He moves the large blocks by putting a small stone under them and the turns them on the stone.

As far as how he figuered out the actual placing of the big blocks, he just see-saws the large blocks and continues to increase the degree of attack by increased the pinion hieght till he gets to a point where one end can slide into a hole with little effort. The block gets staightened by washing out the sand beneath it and leveraging till plumb.

He sure does make it look tit easy but he did admit he has banged his head and dropped some blocks.