Object of the expedition; thence, travelling through the Tehama or lowlands, Niebuhr and his companions visited the towns of Bet el Fakih, Zubed and Mokha, then the great port for the coffee trade of Yemen.
Above sea-level; and turning southwards to Taiz descended again to the Tehama via Hes and Zubed to Mokha.
These districts support a large settled population and several considerable towns, of which Bet el Fakih and Zubed in the western and aahej in the southern Tehama, with 4000 to 6000 inhabitants, are the most important.
Inland; while Bet el Fakih and Zubed, once important centres of the coffee trade, have lost their position through the silting up of the ports which formerly served them.
Zubed, running respectively east and south and west.
At the same time Yemen, which since the 9th century had been in the power of a number of small dynasties ruling in Zubed, San`a, Sa`da and Aden, passed into the hands of the Turk.