Excuse me for being extremely stupid, but why are these finds always under the earth?
It would seem to me that the original towns stripped away all trees, etc, so that leaf decay would not have created new earth around the old structures. If new structures were built upon the rubble of an old structure, I would have thought that the new structure would have used the stones, etc. from the old structure to make it much easier to rebuild.
So why are all these finds of ruins under so much earth???
Flooding?
Worms.
Earthworms turning over the soil. Or so it's been said.
Ever seen how much dust can accumulate in your home in a months time? That’s with four walls keeping the wind from depositing particulates 24/7. Given a couple of thousand of years, it’s a miracle that we have what we have above ground.