Moroccan Western Sahara Wall

The Moroccan Western Sahara Wall or the Berm, also called the Moroccan sand wall (Arabic: الجدار الرملي المغربي في الصحراء الغربية, lit. 'Moroccan sand wall in Western Sahara'), is an approximately 2,700 km-long (1,700 mi) berm running south to north through Western Sahara and the southwestern portion of Morocco. It separates the Moroccan-controlled areas (the Southern Provinces) on the west from the Polisario-controlled areas (Free Zone, nominally Sahrawi Arab Democratic Republic) on the east. The main function of the barriers is to exclude guerrilla fighters of the Polisario Front, who have sought Western Saharan independence since before Spain ended its colonial occupation in 1975, from the Moroccan-controlled western part of the territory.

According to maps from the United Nations Mission for the Referendum in Western Sahara (MINURSO) or the United Nations High Commissioner for Refugees (UNHCR), in some places the wall extends several kilometers into internationally recognized Mauritanian territory.