Scholars estimate that in North Africa and the Middle East alone, there could be up to five million archaeological sites. The majority are still unknown or else have never been officially recorded — a troubling thought at a time when population explosion, urban expansion, wars, and looting threaten their survival. How can we save them for future generations if we don’t even know they exist?
http://hyperallergic.com/186001/archaeologists-are-creating-a-database-of-endangered-sites/