This episode comes back to a place which many previous episodes of the show have brought up. As I pointed out in earlier reviews for this season, they seem to be revisiting some older material from the show. In this case, I'm alright with it though. The reason is that every time they mention this place, there seems to be something else cool to learn about it. This place is so awesome looking that it makes me want to actually go there one day if they allow tourism in that area. And that's rare for me. There's good reason though. If any place I've ever seen or heard of makes a good argument for the ancient aliens theory, it's Puma Punku.

Puma Punku is located in Bolivia and is only around a quarter of a mile away from another famous ancient sight; Tiahuanaco. The funny thing is that on the show, they talk about Puma Punku being potentially much older than Tiahuanaco and that carbon dating has been unsuccessful so far in finding a definitive answer as to the age of the stones in Puma Punku. Yet if you look this up on say Wikipedia, you'll find that they consider Puma Punku as a part of Tiahuanaco and as such, from the same time period. Now, I'm by no means an expert in this type of thing, but I would think that common sense would dictate that this isn't right. All you have to do is look at the ruins of each place, and I think that although they are both impressive looking for ancient civilizations, it quickly becomes clear that these places were not built by the same people. The craftsmenship at Puma Punku is seemingly soley geometric while Tiahuanaco is more artistic in nature. Also, the size and type of stones seem to differ greatly between the two. At one point in the episode, they examine the tool markings or at least try to for Puma Punku. It would have been nice to see them do the same for Tiahuanaco to at least demonstrate the difference between the two sites if nothing else.

Another thing which we saw in this episode which others hadn't touched on was the possible uses of the "H stones" from Puma Punku. The H stones are built with such precision and uniformity that it seems as if they were prefabricated and look as if they were made using machining. I've always found that to be extremely interesting no matter how old the ruins may actually be. Anyway, they had a couple different theories. One expert thought that the dove tailing which was present in each H stone or block was an indication of an intent to lock something in place such as a hinge for giant doors. This theory was interesting, but if correct I'd say that judging by the rows of H blocks there would have to have been a lot of doors there in a row. So, I'm not completely confident in that one. Another theory was that the H blocks were part of a runway and were placed in such a way as to run a skid down them for some type of air craft. Well, this one seems worse than the last one to me, because this would imply that the H blocks would have to lay flat and all or at least most of them do not appear to be in that position or meant to be in that position. Also, that would not explain the dove tailing built in which the previous expert pointed out. If you want something to go smoothly down a runway, adding in something which would potentially lock something into place and at the very least one would think would be a hindrence to speed and certainly not a help, would not make sense. Still, these theories were interesting, because we got to learn more things about the H blocks. However, I should point out the one low point for me as a viewer with this part of the episode. They went back to the theory about the ancient airplane. If you've watched the show, you probably know what I'm talking about. You can usually see a small scale representation of the thing in the form of a pendant which Georgio, one of the experts and head of Legendary Times magazine I believe, wears on his lapel in many episodes. This thing is interesting from an aerodynamic standpoint, but to assume it had anything to do with Puma Punku would be asking a bit much since I believe it originally was found in Egypt. And they didn't directly say that it had anything to do with Puma Punku, but they did use a model of it for their demonstration with a hypothetical runway and I just found that to be a bit gimicky personally.

Next, the focus shifted to how Puma Punku was destroyed. Well, nobody knows for sure what happened. It's clear that something tore the place apart though. The theories seem to range from alien blasters to flooding to earth quakes to an asteroid or some combination there of. I'm not as interested in how the place was destroyed as what it's original purpose was and how it was made in the first place. Sadly, if we ever get a definite answer to that one, it seems that it won't be for quite some time.

I would say that this episode was pretty good overall. My main concern at this point is the same as with the first four episodes though. Are they running out of material? Maybe that might be one reason for the shift from History to History Two. I don't know. So far, they've managed to keep the show interesting enough this season though. And in fact, I think it's been an improvement so far over the last several episodes of season two. I just hope that they can continue to find new material and do a good job with it and not resort to just completely hair brained and ridiculous claims as some times happens and I felt happened far too often at the end of last season. It's one thing to look at evidence and form a theory. It's another thing entirely to go off of no evidence, form a theory, and then act as if it were known fact. That's the tight rope that this show has to walk all the time though. That and being careful not to run out of hairspray for Georgio's hair. Just kidding Georgio. We love you.