Corridor Egypt
This desert corridor lies in the Selima area of Nubia. Selima Oasis lies west of the Nile's Third Cataract, on a long route across the dry country between Sudan and Egypt. Selima was a stopping point on the Darb al-Arbaʿīn, or Forty Days' Road, whose branches linked the Nile valley and Sudanese regions with Egyptian oases. Caravans transported goods and enslaved people along this wider network. A traveller passing Selima around 1700 described a ruined building there as a monastery. Water and reliable knowledge of the desert were essential to journeys between such stops.