Gunung Raung, Stratovolcano in East Java, Indonesia.
Gunung Raung is a stratovolcano formed of andesite that rises 3,332 meters (10,932 feet) above sea level in Bondowoso, East Java. Its summit features a caldera about two kilometers (1.2 miles) wide and approximately 500 meters (1,640 feet) deep.
The first recorded eruption took place in 1586 and marked the beginning of a long series of volcanic events. Activity has continued across several centuries up to the present day.
The name Raung is written in Javanese script as ꦫꦲꦸꦁ. Climbers register for a SIMAKSI permit at the basecamp before setting out and report to the officers there. On the Kalibaru route, the starting point is Rumah Pak Suto in Dusun Wonorejo, and Pos 1 is the coffee stall of Pak Sunarya.
The climb requires several days of preparation and experienced guides, as the routes pass through rough terrain. Access points are located around Bondowoso and near Sumber Wringin.
The summit caldera is among the largest dry craters in Java and one of the largest in Indonesia. Inside the caldera, small Strombolian eruptions occur regularly, keeping the interior of the crater in constant activity.
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