An Indus Valley Ceramic Vessel, c.3000BC, of baked clay decorated with linear motifs and the antelope to interior, intact and stable, 23 x 28 cm Reference: c.f. Bahn 1992: ...'The Indus Civilisation is one of the great civilisations of antiquity, located in Pakistan, Baluchistan and Nw India. [Occupied from c.6th Millenium BC]... in the greater Indus valley, [one of its later and important cities was Harappa dated to c.3rd millennium BC] excavated by M.S. Vats in the 1920s and 1930s, by M. Wheeler in the 1940s and more recently by G. Dales... The Mature Harappan [2600-2500 BC] is typified by urban centres and massive 'public' architecture, the use of characteristic 'administrative' devices, a still undeciphered writing system, square seals, and metrical standards, especially for weight, technological sophistication, and wide contacts with surrounding regions, from Central Asia to southeastern Arabia and southern Mesopotamia. Covering an enormous area some 800,000 sq km...' Bahn P. (ed) 1992, Collins Dictionary of Archaeology, HarperCollins, Glasgow, pp.202-203