Question for the floor

[andrewducker]

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?

Comments

[gonzo21.livejournal.com]

We have pottery that has survived from the earliest pottery making civilisations. Heck, before that we've got wooden plates and bowls made by Mesolithic hunter-gatherers.

So yes, stuff survives.

Except, as I just said in a comment below, in areas that have been subject to glaciation.

If there was a civilisation that was located only in areas that were covered by ice, then I would not expect to see any traces of their survival.

Which grants lots of room to crazies to argue that this is what happened to Atlantis.