Djibouti (Arabic: جيبوتي Jībūtī, Somali: Jabuuti), officially the Republic of Djibouti, is a country in the Horn of Africa. Djibouti is bordered by Eritrea in the north, Ethiopia in the west and south, and Somalia in the southeast. The remainder of the border is formed by the Red Sea and the Gulf of Aden. On the other side of the Red Sea, on the Arabian Peninsula, 20 kilometres (12 mi) from the coast of Djibouti, is Yemen. The capital of Djibouti is the city of Djibouti. Djibouti lies in northeast Africa on the Gulf of Aden at the southern entrance to the Red Sea. Djibouti has 314 km (195 mi) of coastline and shares a 113 km (70 mi) border with Eritrea, 337 km (209 mi) with Ethiopia and 58 km (36 mi) with Somalia (total 506 km/314 mi). The country, the size of Massachusetts, is mainly a stony desert, with scattered plateaus and highlands. Djibouti shares 113 km of border with Eritrea, 337 km with Ethiopia and 58 km with Somalia (total 506 km). It also has 314 km of coastline. It has a strategic location near the world's busiest shipping lanes and close to Arabian oilfields. Djibouti is also terminus of rail traffic into Ethiopia. Its climate is mostly warm, dry desert. Mountains in the center of the country separate a coastal plain and a plateau. The lowest point is Lac Assal (−155 m) and the highest is Moussa Ali (2,028 m). Natural resources include geothermal energy. There is no arable land, irrigation or permanent crops, nor any forests. 9% of the country is permanent pastureland (1993 est).