As a result of the archaeological dig in the territory of Agstafa region, through which the Baku-Tbilisi-Ceyhan oil and South Caucasus gas pipelines pass, scientists of the Institute of Archaeology and Ethnography of the Azerbaijan National Academy of Sciences have discovered ancient mound dating back to the 4th millennium BCE. The finding considered to be the most ancient one of this kind in the Southern Caucasus testifies that the tradition of manufacturing burial stones first began in Azerbaijan, and later spread to the Northern Caucasus.

Source: AzerTag (3 December 2005)