Where does the dirt come from that covers up ancient sites?
Is it blown in from the desert somewhere?
Does it just grow naturally?
I can see sand covering up the Sphinx in Egypt. It is surrounded by a desert. No rain to wash away the dirt.
But how about the sites in Europe? In London, archaeologists keep digging up burial grounds and buried silver from Roman or Viking times. I can see if something was deliberately buried to protect it from marauders, but how about finding whole cities underneath carparks?
I think too much.
With the accumulation of dust in our house, I can see that it would take millennia to cover the whole house, but still. We're on our way.
How come Stonehenge wasn't buried?