Erg Chebbi (Arabic: عرق الشبي), in southeastern Morocco, is one of two Saharan ergs in the northwest African nation. Its distinctive ergs — large dunes formed by wind-blown sand — reach up to 150 meters high, and form a composite erg 22 km long (north-south) and 5 km wide. The village of Merzouga, about ten hours from Marrakesh or Fez, is located near the edge of the dunes. The dunes are a popular tourist destination.
The erg is located roughly 40 kilometers southeast of Erfoud. The locals believe that these dunes were sent as punishment for turning away a weary traveler from the desert. They say that shortly thereafter, the gods made the dunes pile up outside their town as a lesson never to send away another needy wanderer.