In my dream, Romans used stone from Italy for construction in Egypt. This required large heavy slabs to be transported down the Nile. Problem was, the Nile would get real low every year. I was on a boat transporting stone & it got stuck in a shallow part & as we waited for waters to rise, they just went down & the bed actually dried up where we were. I watched the bed dry up in a kind of time lapse photography. The water, even as it was ponding, was bright blue.