While digging for new construction, a giant black sarcophagus was discovered in Egypt. https://www.ancient-origins.net/new...th-large-black-sarcophagus-alexandria-0010310
A problem in Alexandria is the fact that the old city is buried entirely under the new city, meaning excavation is difficult to conduct. Who knows what jewels will eventually be discovered there? In contrast, in Upper Egypt the Nile has often shifted its course since ancient times resulting in ancient settlements being discovered a few km from where the Nile now flows.
Yeah, it is pretty amazing @NLL ! Just think of what is laying underneath the city's streets - perhaps the tomb of Alexander the Great.