He has constructed a concrete Stonehenge-like structure using only materials and techniques that do not rely on any modern machine-powered technology.
He has demonstrated this technique[1] on the Canadian science television program Daily Planet[2][3] and also for the Discovery Channel.
[4] His technique uses simple machines such as levers aided by counterweights and pivots.
He says that he has successfully singlehandedly "walked" a twenty-ton barn and multi-thousand-pound concrete blocks using a beam lever and two pivots beneath the object and near the center of mass.
These techniques might be comparable to those used by Edward Leedskalnin when he had single-handedly constructed his massive Coral Castle in Florida.