Start your journey south, over the Col du Zad pass (7,146 feet or 2,178 m) and through the cedar forests of the Middle Atlas mountains. You will see families of Barbary macaque monkeys in the trees and by the side of the road as you head to Midelt (the 'apple city') to lunch. Appreciate the scenery: the Moulouya River and the apple orchards. Next, travel over the Tizi n'Talremt pass and into the Ziz Valley dotted with oases and palm tree clusters. Notice the many ksars, fortified houses merchants built to protect their wares (gold, salt, and spices). Nearing Erfoud, you will start to see the early signs of the Sahara sand dunes. Never stationary, the dunes travel as the winds shift. If you're lucky, you may come across a nomadic Berber family and have the chance to drink tea together. Visit Erfoud and discover how the fossil-rich rock of its mines is transformed into decorative and practical objects. Continue on to the extensive sea of sand dunes of Erg Chebbi. Covering 13.5 square miles (35 square km), some dunes rise to over 656.2 feet (200 m), their color changing with the moving sun. Outside of Merzouga, change the pace and prepare for a camel ride through the dunes, arriving at camp just before sunset. Climb up the nearest sand dune to watch the colorful display as the sun sets behind the colossal dunes. Return to camp for dinner in the open air and an evening by the campfire enjoying traditional Berber music from the locals under a blanket of stars. Spend the night in a Bedouin-style tent.