Perfectly straight circular holes, unusual indentations, seamless joints, precise right-angles…. and all of this from a civilization which we are meant to believe achieved such amazing results, by repeatedly dropping stone balls onto the surface. That’s right, they did not possess any metal-working capabilities. Nobody knows why they went to such great lengths to produce these pieces of masonry. Their purpose remains a mystery. But does the evidence contradict the historical version of events? You decide!