Hur byggdes Puma Punku?

Det hade varit svårt med den tidens teknik att transportera stenarna då flera är stora och avståndet till stenbrottet långt. Enligt etablerad vetenskap skall man ha använt vassbåtar, men det känns liksom inte så troligt att ett primitivt fiskarfolk med vassbåtar skulle ha konstruerat något som ser ut som det kunde vara gjort i modern tid.

In assembling the walls of Pumapunku, each stone was finely cut to interlock with the surrounding stones. The blocks were fit together like a puzzle, forming load-bearing joints without the use of mortar. One common engineering technique involves cutting the top of the lower stone at a certain angle, and placing another stone on top of it which was cut at the same angle.[4] The precision with which these angles have been utilized to create flush joints is indicative of a highly sophisticated knowledge of stone-cutting and a thorough understanding of descriptive geometry.[6] Many of the joints are so precise that not even a razor blade will fit between the stones.[10] Much of the masonry is characterized by accurately cut rectilinear blocks of such uniformity that they could be interchanged for one another while maintaining a level surface and even joints. However, the blocks do not have the same dimensions, although they are close.[9] The blocks were so precisely cut as to suggest the possibility of prefabrication and mass production, technologies far in advance of the Tiwanaku’s Inca successors hundreds of years later.[9] Some of the stones are in an unfinished state, showing some of the techniques used to shape them. They were initially pounded by stone hammers, which can still be found in numbers on local andesite quarries, creating depressions, and then slowly ground and polished with flat stones and sand.[9]