Andrew Ducker (andrewducker) wrote,
Andrew Ducker
andrewducker

Question for the floor

So, how long in the past would a previous civilisation of, say, Mesopotamian levels have had to be for their to be no remaining sign of it? i.e. for any bronze tools to corrode away to nothing, pottery to do likewise.

How long will it take until Stonehenge is worn down to nothing by the wind and rain?


This entry was originally posted at Dreamwidth - you can comment here or there, but I suspect that most comments will be here. Comments so far over there: comment count unavailable
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