I read Michener’s book “The Tell” (iirc) years ago, about the Israeli hilltop cities built on top of previous cities. I think most of the previous towns were destroyed in battles, but perhaps natural and manmade disasters too. Then they would start all over again. I’m guessing a lot of history in the mound down through the ages.
They found some 11,000 year old tools and stuff along a creek in my town. No mounds though, and no long history. Just the 11,000 year old tools and bones, 5 to 10 feet below some old Rainier Beer cans.