200BC, Eratosthenes of the Library of Alexandria, Egypt produced his world map.
Note that the name of the southern coast of Arabia is named Chatramitae.
It was pronounced approximately "(cH) ad e rama uht e" (with a weak Ch/ strong H sound), and numerous names are derived from it: Chad, Chalde, chant, merchant, Iram, adramite, haudrumaut, shahra (people of Dhofar, Oman who raise the only cattle in Arabia and gather frankinsence) etc.
Did the Jews build these mudbrick towers? http://www.boston.com/bigpicture/2008/10/stormbattered_yemen.html
Link between Roman Hydromet & Hydramaut:
Link between Hadramaut & Indonesia trade (mahabalipuram): http://www.sunniforum.com/forum/showthread.php?74948-Link-between-Indonsia-and-Hadramaut-Yemen
Mega-lake Chad enlarged and shrank through geologic time.
Chad->Darfur/Kordofian->Chatramites/people of Ad at Iram/Dhofar/Zuhar/Ubar->Towhar/Taurus mtns./Akkad/arcadians/Ugarit(ubgharit)/Chaldia/Chaldees, Ur (Basque=water, Hindi = homestead)