Java is a long narrow island, separated from Sumatra by the Sunda Strait. Its northern shore faces the Java Sea, and its southern shore faces the Indian Ocean. The entire island is a chain of more than fifty volcanoes, including many that are extremely active, and have historically caused tremendous damage. The volcanoes Gunung Raung, Papandayan, and Galunggung have all killed thousands of people in their eruptions, as has Gunung Merapi, which is still active today. Its 1995 eruption killed thirty and injured over 100.
Java's highest mountain is Gunung Semeru (Mahameru), which rises to 12,060 ft. (3,676 m).