Erosion and silting don’t take millions of years.Neither do earthquake induced changes.Here on my modest farm there have been several rather dramatic alterations:one night during a heavy thunderstorm a large section of road and all its bordering 70 foot tall trees disappeared with a thundering crash into the raging waters of a creek that one can normally wade ;another time the flat shelf of a hillside slumped into “eyebrows” following an earth tremor we didn’t even feel;a huge bank of rocks and hundreds of tons of sand appears after another storm,and the watercourse moves dozens of feet to one side, taking away significant portion of a field;sinkholes open up .And this is a stable area!?
It is no wonder ancient cities ,homes, and farms are still discovered in surprising current locations.
True enough.
Thanks for sharing.