caravansary

Ubar:

The legendary city of Ubar was once a center of trade and wealth. According to legends and accounts by early historians, this city was fabulously wealthy as it was located on the overland incense …

The Southern Desert Trek:

South of Medina the incense caravans took several different routs. Some traveled through the rugged mountains, while others kept closer to the desert to avoid inhabited places where thieves or taxes …