In the morning we left for the Todra Gorge, a spectacular drive which is unphotographable due to the whole panorama being filled with the rugged grandeur of the red rock face and only if you turn your head upwards can you catch sight of the blue sky far above. The gorge is about a mile long and snakes its way along a (dry) river bed. Our journey to the Gorge took us along the ancient caravan routes that reached out from Fez and Marrakesh, across the Sahara and on to Timbuktu, carrying gold, slaves and salt. Salt was a valuable commodity and was mined in the mountains, a pound of salt selling for an ounce of gold. The slave trade continued until the early 1900s when the Europeans put a stop to it.