Dilmun “where the sun rises” was a major trading partner of Sumer in the days that the Persian Gulf was dry land, during the Ice Age when sea level was a few hundred feet lower, and the ruins of stone houses reportedly are found there, so let’s see some photos! The southern 1/3rd of the Red Sea also was dry land at that time, as was the entire Gulf of Suez (through which flowed the Nile distributary the wadi Tumilat), much nautical archaeology to be done in those regions, dry land until circa 1500 b. c.