Did you see the thread, yesterday, about the sunken bridge that had been uncovered by low water levels in (I think Mexico)- I lost that thread somehow and can't find it again. I only got to read a bit when my computer crashed- so I don't remember the title
http://www.freerepublic.com/focus/f-news/1490076/posts
Photo: Lower water levels reveal medieval bridge in Spanish reservoir
there ye be.