Darb El Arba'īn
Darb El Arba'īn (Arabic: درب الاربعين) (also called the Forty Days Road, for the number of days the journey was said to take in antiquity) is the easternmost of the great north–south Trans-Saharan trade routes. The Darb El Arba'īn route was used to move trade goods, livestock (camels, donkeys, cattle, horses) and slaves via a chain of oases from the interior of Africa to portage on the Nile River and thence to the rest of the world.