Accumulation of the archaeological evidence points to the probability that Eastern Arabia play a decisive role in cross- cultural contracts during the third millennium B.C. The small island of Tarut of the coast of Qatif, appears to have boasted a very active seaport, which was involved in wide spread trading network. Eastern Arabia coastline could well controlled a far- flung traffic in the trade among the civilizations, which existed 5000 years ago. During the last century, Qatif was the inland oasis supporting the fishermen villages of Al – Khobar and Dammam, now full-fledged towns.