Were these built for aliens? Or maybe by aliens?
I love this question. I have no idea if aliens have ever visited earth. I don't care either; but for some reason I love the speculation. Sci-fi makes for great movies and books. For me, it's a break from reality, which I really, really need. Besides, maybe aliens really have visited here and that's who built the pyramids and the Easter Island statues, why not? And the million-dollar question – will they come back and save us from our own folly? That would be nice.