The Conspiracy Theory and Flood Prevention

My dad did archaeology is like a sort of hobby that he then occasionally did the the the decay I feel like he put he would have described himself as a professional but probably made like 100 quid. He do like go on archaeology digs and stuff is under the groundlike I don't know like there is sort of I can see a logic thereYeah why is that I that's pretty bad I feel like I should know that and that uh sorry presumably it's the mud flood right like well they are yeahThat's that's like the leavers of the conspiracy theory believe that that's the reason like a large part of like cities because even when you build on like dig in modern-