There are roughly 400 volcanoes in Indonesia, and 150 of them are active, which represents 75% of all active volcanoes in the world. Located on Lombok (Bali’s “Sister” Island), and rising at 3,726m, Mt. Rinjani is the second highest volcanic peak in Indonesia and is a part of the well known "Ring of Fire".
Forested slopes rising directly from the sea create their own weather pattern and act as the main water-catchment for the island of Lombok. Gunung Rinjani National Park lies within a major bio-geographical transition zone (Wallaceae), where the flora and fauna of South East Asia meets that of Australasia. The National Park, one of over 50 throughout Indonesia, was established in 1997.
For the people of Lombok, Sasak and Balinese alike, Mt. Rinjani is revered as a sacred place and abode of deities. At 2030m the crater lake, called Danau, is a pilgrimage destination for tens of thousands persons each year. Pilgrims place offerings in the water and bathe away ailments in the hot springs. For visitors, the five-days Rinjani Trek route from Sembalun Lawang to the crater rim, down to the crater lake to do some altitude diving then on to Senaru crater rim and down to Senaru, is considered one of the best treks in South East Asia and a unique and holy place where you can practice altitude diving at 2000m in 21°C. More adventurous trekkers aim for the summit which is a really hard trek and cannot be safely combined with dives in altitude.

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