Horn of Africa Consequently, they lose their moisture before reaching Djibouti and Somalia, with the result that most of the Horn receives little rainfall during the monsoon season. In the mountains of Ethiopia, many areas receive over 2,000 mm (80 in) per year, and even Asmara receives an average of 570 mm (23 in). This rainfall is the sole source of water for many areas outside Ethiopia, including Egypt. In the winter, the northeasterly trade winds do not provide any moisture except in mountainous areas of northern Somalia, where rainfall in late autumn can produce annual totals as high as 500 mm (20
Horn of Africa Cinnamonifora due to the aromatic plants, or Regio Incognita owing to its unchartered territory. Shell middens 125,000 years old have been found in Eritrea, indicating the diet of early humans included seafood obtained by beachcombing. According to both genetic and fossil evidence, archaic Homo sapiens evolved into anatomically modern humans solely in the Horn of Africa between 200,000 and 100,000 years ago and have dispersed from the Horn of Africa. The recognition of "Homo sapien idaltu" as a valid subspecies of the anatomically modern human lineage would justify the description of contemporary humans with the subspecies name "H. s. sapiens".