Well, if Pumapunku is considered such good evidence for the Ancient Astronaut theory, we should probably start by looking at it. After all, it’s the one that they say was built directly by extra-terrestrials.
AA: “Pumapunku is the only site on planet Earth that, in my opinion, was built directly by extraterrestrials.”
Ancient Aliens starts off with a false dilemma by making people think that it was absolutely impossible for ancient people to construct Pumapunku, even to the point of making outright false claims.
AA: “One of the most intriguing thing there is it that the stones that were used there weren’t sandstone, they’re granite and diorite. The only stone that is harder than diorite is diamond, so the only way this could have been achieved is if the tools were tipped with diamonds.”
This is funny because it’s totally wrong, the stones are not granite or diorite at Pumapunku, they are Red Sandstone and Andesite[1][2][3], but this is also funny because of the way he says it.
AA: “The stones that were used there weren’t sandstone, they’re granite and diorite.”
Well yeah, actually it is sandstone. You can’t blame him though for it becomes obvious that throughout the series he often just repeats things he has heard in Eric Von Daniken’s books. Von Daniken’s books are what the Ancient Aliens series is based on. Later we see Eric Von Daniken himself make the exact same, totally wrong claim.
AA: “Of course [Pumapunku was] made out of stones found on Earth, because you don’t transport granite or diorite from another solar system.”
Von Daniken continues building up this false dilemma:
AA: “One of these platforms is 800 tons.”
That is very incorrect, the heaviest block at Pumapunku is 130 tons[4], and most of the stones are much smaller than that. So he is off by a whopping 670 tons! Unfortunately we will come to expect this kind of thing from Von Daniken as we progress.
Ancient Aliens spends quite a lot of time pointing out the various features in the stone masonry at Pumapunku before declaring it impossible to do without power tools.
AA: “Each of these small drills holes are basically evenly spaced along this routed groove. To me it’s clear that power tools have been used on this unusual block of stone here.”
AA: “This surface is as smooth as a table top, like in your kitchen. There’s no wave to it. This was machined.”
The sandstone and andesite stones at Pumapunku would have been easily worked with the most basic stone working tools[5][6], the idea that diamond tipped power saws were needed is ridiculous. The red sandstone was relatively soft and easy to work with, and even though andesite is pretty hard, because of the way it cooled it could be easily flaked off using stones as soft as 5.5 on the Mohs scale.[7] Such pounding stones were found all over andesite quarries in the area.[8]
Puma Punku - Ancien Aliens Debunked