Jan Peter de Jong's video: Chapter 7 Moldable Stones

Sequential or diaphanous forms have been expressed on the surface of hard stone with such facility that one is led to believe that at some point in the remote past the rock was soft enough to be moulded. The passage of time has not been able to erase the fresh aspect of the moulded stone of Hanan Pacha. The most coherent explanation of how such designs were left on what must have once been soft stone is found in the work of Alfredo Gamarra. He theorizes that, given the existence of the oldest known calendar which records an orbit of 225 days, the Earth must have once been closer to the sun. This would have meant that different physical laws once governed our planet. In other words, during Hanan Pacha the force of gravity on Earth would have been less than it is today. Atmospheric pressure would have been less and it would have been much easier to mould stone. Clearly, in a reduced gravitational field, it would have been much easier to move the enormous blocks from their quarries to the sites were they were used, a feat which has baffled observers for centuries. The ancient legends of Merlin the Magician in England, and that of the Ñaupas, or the first men, in Peru, tell of how the giant stones of Stonehenge and Sacsayhuamán were transported upon the air. The moulding of stone not only occurred in Hanan Pacha, but also in Uran Pacha. The evidence is there to see. For example, moving closer we can see that in this wall at Koricancha... ...The stone of the lower piece of the wall enters the commissure left by the upper pieces. At several archaeological sites where the walls of Uran Pacha were dismantled the marks left by the moulded stone walls built upon them can be seen. A virtual moulded model shows the process used to form the stone, which was not cut or chiselled but rather moulded from softened stone.