Somalia (/sɵˈmɑːliə/ so-MAH-lee-ə; Somali: Soomaaliya; Arabic: الصومال‎ aṣ-Ṣūmāl), officially the Federal Republic of Somalia (Somali: Jamhuuriyadda Federaalka Soomaaliya, Arabic: جمهورية الصومال الفدرالية‎ Jumhūrīyat aṣ-Ṣūmāl al-Fidirālīyah), is a country located in the Horn of Africa. It is bordered by Ethiopia to the west, Djibouti to the northwest, the Gulf of Aden to the north, the Indian Ocean to the east, and Kenya to the southwest. Somalia has the longest coastline on the continent's mainland, and its terrain consists mainly of plateaus, plains and highlands.