In Sahara, Salt-Hauling Camel Trains Struggle On
http://news.nationalgeographic.com/news/2003/05/0528_030528_saltcaravan.html

Chris Rainier, National Geogaphic News


This National Geographic site features an article about camel caravans that have, since the Middle Ages, navigated the Sahara Desert in search of salt. Caravans often numbering more than hundred still journey to the salt mines of Taudenni, 500 miles (800 kilometers) north of Timbuktu.

This resource is referenced here:
Subject: Geography:Human/Cultural
Resource Type: Scientific Resources:Overview/Reference Work