Southwest Asia has several important landforms and waterways. It contains two large peninsulas, the Arabian Peninsula and Anatolian Peninsula. Key bodies of water include the Red Sea, Suez Canal, Black Sea, Bosporus and Dardanelle Straits, Arabian Sea, and Persian Gulf. The Jordan River and Tigris and Euphrates Rivers are also significant. Much of the region contains plains and deserts, but there are also highlands and mountain ranges like the Zagros and Elburz Mountains. A major resource is oil, with about half of global reserves located in Southwest Asia.