Bromo-Tengger national park is located on East Java, about three hours by car from Surabaya. Tengger is a huge, old caldera with the Bromo volcano inside. The smoking cone of Bromo raises from the plain of this 10 km wide caldera, but is not the highest mountain inside. Side by side with Bromo are also other mountains like Gunung Batok (2.440m) and Gunung Kursi (2.581m). Bromo (2.392m) and the nearby Semeru volcano, the highest mountain on Java (3.676m).