Horn of Africa periodic monsoon winds and irregular rainfall. Mean daily maximum temperatures range from , except at higher elevations along the eastern seaboard, where the effects of a cold offshore current can be felt. Somalia has only two permanent rivers, the Jubba and the Shabele, both of which begin in the Ethiopian Highlands. About 220 mammals are found in the Horn of Africa. Among threatened species of the region, there are several antelopes such as the beira, the dibatag, the silver dikdik and the Speke's gazelle. Other remarkable species include the Somali wild ass, the desert warthog, the hamadryas baboon, the Somali
Horn of Africa Five Books of Moses and the books Joshua, Judges and Ruth. A number of ethnic minority groups in southern Ethiopia also adhere to various traditional faiths. Among these belief systems are the Nilo-Saharan Surma people's acknowledgment of the sky god "Tumu". In the modern era, the Horn of Africa has produced several world-famous sports personalities, including long distance runners such as the world-record holder Kenenisa Bekele and Derartu Tulu, the first Ethiopian woman to win an Olympic gold medal and the only woman to have twice won the 10,000 meter Olympic gold in the short history of the event. One