Jesus! Those are huge. Definitely something we dont know about our past.
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I don't know why its always assumed things like this point to alien intervention etc.
While it's certainly impressive, its not impossible that with enough manpower this couldn't be achieved. Our ancestors weren't some stupid race of apes until we came along, in fact a lot of ancient thinkers/mathematicians etc put the modern general population to shame.
I never said aliens. But it is possible we have forgotten a technology from the past
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Sorry, was referring to the comments in the article, should have been clearer.
I definitely think there's ancient knowledge and ingenious techniques that have been lost.
Also slave labour and the fear of some god usually gets people moving.
Our ancestors were not stupid apes, but that is one hell of an achievement that even today we would struggle to recreate.
Its pretty mind boggling to say the least.
That's just a photo of some action men in front of a standard sized brick