re: Hundreds of mysterious Stonehenge like structures found in Amazon

Looks more like Poverty Point to me than Stonehenge . I don't get what the big surprise is, every early civilization on every continent did earth work creations, piling dirt or whatever they have nearby in various shapes and sizes. I guess it's neat that they all do it independently of each other, but is it really surprising, they're all humans all civilizations basically do the same things. Some just better than others and some last longer because of the materials they have readily available.