Clash of the Continents

Most likely, 250 Million years from now the Earth will once again be a Supercontinent, created as all the earths land masses drift back together over time. Imagine a spaceman looking for evidence of mankind. What would he find? All monuments of man would be torn away and pulverized by tectonic and geological forces. The Pyramids - engulfed in the mountains rising out of the former Mediterranean; Naples - long buried... But maybe New Orleans, buried beneath the mud of the Mississippi Delta, woul…