Darb El Arba'īn
... that camel caravans using the Darb El Arba'īn trade route transported salt and slaves?
... that camel caravans using the <b id="mwAwE"><a href="./Darb_El_Arba'īn" id="mwAwI" rel="mw:WikiLink" title="Darb El Arba'īn">Darb El Arba'īn</a></b> trade route transported salt and slaves?