Bou Craa is a town in Western Sahara, south-east of the main city of El Aaiún. It is inhabited almost exclusively by employees of Phosboucraa, a Moroccan-controlled phosphate company.
Located in the Saguia el-Hamra region, Bou Craa is the site of a phosphate deposit of 1.7 billion tons. Mining began there in 1972. During the Spanish colonization time of the area, many early recruits of the nationalist movements Harakat Tahrir and Front Polisario were Sahrawi workers in the phosphate mines.
Today, the mine produces around 3 million tonnes annually, which represents 10% of Morocco's total production. The phosphates are transported to the coast by an automated conveyor belt, which is the longest such belt in the world, and is visible from space.
The Bou Craa conveyor belt system in the Western Sahara is over 61 miles long and is used to transport phosphate ore from the mine in Bou Craa to the port town of Marsa in Morocco. It consists of a winding system of interlinked belts, hence the differentiation between this belt and the Western Australian single conveyor.