Erg Chigaga
Erg Chigaga or Erg Chegaga is the largest of the major ergs in Morocco. It is located in the Draa valley in the southeastern part of the country. The other well-known erg in the country is Erg Chebbi near Merzouga.
This erg made of sand dunes is located in the Drâa-Tafilalet area about southwest of the town of M'Hamid [El Ghizlane]. Some dunes are over 50m above the surrounding landscape. The north border is represented by Djebel Bani, the east border is represented by M'Hamid hamada. To the southeast is the Erg Smar, adjacent to Erg Ezzahar, and to the west is the Iriki Lake, a dried lake now part of the Iriqui [National Park] since 1994.