The vast majority of northern section of the array has an elevation of about four,000 m (13,123 ft); the southern component is relatively reduce. Rainfall, although scanty everywhere, is bigger from the northern 50 percent, here in which the land is covered with scrub vegetation. The southern area gets Practically no precipitation, as well as the landscape consists mostly of barren rocks. The entire Cordillera Occidental areas are sparsely populated, as well as the south is practically uninhabited.