Rinjani is a composite volcano on the Indonesian island of Lombok and after the Carstensz Pyramid and the Kerinchi the third highest volcano in the country.
Rinjani is an island arc volcano and is one of the volcanoes of the Sunda arc . The island arc was formed by the subduction of oceanic crust, to the Indo-Australian plate is. The volcanoes of the Sunda arc are mostly high explosive. Not far away is the Rinjani from Mount Tambora , in 1815 with a VEI strength of erupted 7thBy the Gunung Rinjani National Park , which was founded in 1997, the mountain is protected. From here is access to the crater will be organized. In the 6 x 8.5 km wide caldera lies the 230-meter deep crater lake Segara Anak . More than 20 villages located around which the inhabitants worshiped as sacred mountain. The last major eruption was in May 2009 and May 2010.