Why are archaeological sites often found underground?

Question

What caused them to go “underground”?

In: 3

Answer 1

Soil moves a lot from wind and rain.

In some places the dirt naturally accumulates because wind is broken down there (buildings are good at that) while in others it gets moved away.

Archaeological sites that do get buried by this have a much higher chance of surviving the ages. People can’t steal the stones to build houses from it.