These structures are arguably the oldest and most baffling ruins on the face of the earth.
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 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! There is one more significant thing to mention regarding the ruins of Puma Punku. Not only were these stones cut somehow, but they were finely cut. The cuts on these stones are perfectly straight. The holes cored into these stones are perfect, and all of equal depth. Who Did All This???The simple answer; we have absolutely no idea who did all this, or even how they could have done it.