https://www.youtube.com/watch?v=j9w-i5oZqaQ
It's 3 hours long, but I think the first section is about Puma Punku, and goes on for only 10 minutes or so. Essentially, this is a debunk of 'Ancient Aliens,' and details how humans were able to build such impressive structures using the technology they had at the time. No aliens, just innovation.