Mosaic - Periods and centres of activity | Britannica.com
Mosaic - Periods and centres of activity: Among the cultures of the ancient Middle East there is one remarkable occurrence of a mosaic-like technique: the exteriors of some large architectural structures dating from the 3rd millennium bce, at Uruk (Erech) in Mesopotamia, are decorated with long terra-cotta cones imbedded in the wall surface.
