Sarazm, which means “where the land begins”, is an archaeological site bearing testimony to the development of human settlements in Central Asia, from the 4th millennium BCE to the end of the 3rd millennium BCE. The ruins demonstrate the early development of proto-urbanization in this region. This centre of settlement, one of the oldest in Central Asia, is situated between a mountainous region suitable for cattle rearing by nomadic pastoralists, and a large valley conducive to the development of agriculture and irrigation by the first settled populations in the region. Sarazm also demonstrates the existence of commercial and cultural exchanges and trade relations with peoples over an extensive geographical area, extending from the steppes of Central Asia and Turkmenistan, to the Iranian plateau, the Indus valley and as far as the Indian Ocean.

Źródło: World Heritage Convention
http://whc.unesco.org/en/list/1141