The Great Pyramid of Giza was built using over 2 MILLION stones (2.3 million by most estimates)
and once you see the level of exact precision (that would be difficult for us to match using todays technology) that these stones are both cut and placed (according to experts in the field), you may begin to apreciate how inadequate the currently accepted theories are in explaining the building of these megalithic structures (being barely out of the stone age)
In order for the great pyramid to have been built in the 20 year time frame (according to the literature) ... stones would have to have been cut (to exact precision) transported ( without damaging them) and set 1 stone every 3 minutes
It is highly unlikely that any of the stones in Puma Punku were cut using ancient stone cutting techniques, at least not those that we are aware of.
The stones in Puma Punku are made up of granite, and diorite, and the only stone that is harder that those two, is the diamond. If the people who built this place cut these stones using stone cutting techniques, then they would had to have used diamond tools.
If they didn't use diamonds to cut these stones, then what did they use?
Not only were these stones really hard to cut, but they are also extremely heavy. One of these stone ruins weighs in at about 800 tons! These are big stones, and they are really heavy. The nearest quarry is at least 10 miles away from the site of the ruins. How in the world did these people move these blocks that weighed many tons, and how were they able to form a structure with them?
With the technology that we currently have today, it would be extremely difficult to recreate the site of these ruins, if possible at all. If we can't do it, then how did these ancient people accomplish this task? This could have taken place anywhere from 500 b.c. all the way back to the Ice Age.
These ancient people had to have been very sophisticated, knowing astronomy, geomancy, and mathematics. However, there are no records of this work. To build a place like Puma Punku, there must have been significant planning, and writing involved, but there is no record of any of this.http://www.youtube.com/watch?v=AABPXvwevVA
Again, if these ancient people were able to build with such astonishing precision and skill, then why did they suddenly stop. And why did they seem to lose all of their advanced architectural and stone cutting abilities?