Global Volcanism Program | Image GVP-01199
Tambora's serrated NE caldera rim towers 1,250 m above the caldera floor. The 6-km-wide caldera was formed in 1815, during one of the world's most powerful eruptions of the past 10,000 years. Since 1815 only a few minor eruptions have occurred on the caldera floor.
Photo by Rizal Dasoeki, 1986 (Volcanological Survey of Indonesia).