Erg Chebbi is one of the great natural spectacles of North Africa — a 28-kilometre sweep of towering Saharan dunes rising up to 150 metres, set against the flat stony desert of southeastern Morocco. The sand shifts from pale gold at midday to deep orange and red at sunset, and the light changes everything: what looks dusty and static at noon becomes incandescent an hour before dark.
The dunes are best experienced at their extremes — before sunrise, when the air is cold and the light comes up fast behind the Algerian hills; and at sunset, when the long shadows cut the ridgelines and the whole thing glows. The summit of the highest dune, reached after a 30-minute climb through soft sand, gives a 360-degree view of the erg below and the flat hammada stretching away on every side.
You can walk into the dunes on foot from Merzouga itself — it takes about 15 minutes from the edge of the village to reach the first significant dunes. The deeper interior, where the dunes reach their full height and the village disappears, takes another hour on foot or a shorter time by camel. Most camps are positioned 2–3 kilometres into the erg, far enough that the glow of Merzouga vanishes.