Volcano Papandayan (on Java, Indonesia.) - One of the biggest and most dangerous volcanoes in the world is located in Indonesia. Papandayan Crater lies at an altitude of 1800 meters above sea level. From the slope of the volcano flows warm river, where the temperature reaches 42 degrees Celsius. Slopes papandayan teeming mud pots, hot springs and geysers. The last eruption recorded in 2002.