I live in Rome and they often say that it’s difficult to build a subway because of all the ruins underground, so i’ve always wondered, how can an ancient city get so deep underground? Where does all the dirt covering them come from? Were they covered on purpose so they could build over them, or is this a natural phenomenon?
You can especially see this in the foro romano where the ruins are so low underground compared to the streets you can walk on
In: Planetary Science
Dust from erosion or volcanoes, combined with silt from rivers and decaying plant material build up over centuries to bury cities and monuments in a thick layer of soil. https://youtu.be/EofirRBIh28
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