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originally posted by: Corruptedstructure
Maybe it was a race track
originally posted by: Mastronaut
a reply to: Byrd
Ye I think they used the very loose meaning, I suspect they referred to wikipedia
There are three related types of Neolithic earthwork that are all sometimes loosely called henges. The essential characteristic of all three types is that they feature a ring bank and ditch, but with the ditch inside the bank rather than outside. Due to the poor defensive utility of an enclosure with an external bank and an internal ditch, henges are not considered to have served a defensive purpose (cf. circular rampart).
I've also seen a lot of north american earthworks from the mound cultures which could have been called "henges" under these assumptions. I think that the choice is sensationalistic, but the findings are remarkable.
I think that similar findings could be found in the whole south east asia, both constinental and insular. There is impenetrable forests covering large areas that hosted people for millions of years, I doubt they just lived like apes a millenia ago.
Finally a good article on the pourpose of drones, they don't always have collateral damage /s