And diorite the only stones that' are harder that dirorite is diamonds so the only way that this could have been achieved is if that tools wereoit tipped with diomonds this is funny because it's totally wrong the stones are not granite or diorite at Pumapunku they are red sandstone and andesite but this is also funny because of the way that he says it the stones that were used werent sandstone there granite and diorite well yeah i actually it is sandstone you can't blame them though it becomes obvious that throughout the series he often just repeats things he's heard in Erich Von Daniken's books 