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Tambora(täm`bərə), active volcano, N Sumbawa, Nusa Tenggara Barat prov., Indonesia, rising to 9,255 ft (2,821 m). The volcano's 1815 eruption was one of the most destructive in historical times, killing an estimated 50,000–90,000 people, destroying the kingdoms of Tambora and Papegat, and causing crop failures on neighboring Bali and Lambok. Lingering ash in the atmosphere led to global cooling and created "the year without a summer" in many areas throughout the world, including the United States.
See G. D. Wood, Tambora (2014).
a volcano on the island of Sumbawa in Indonesia. Tambora, which rises to an elevation of 2,821 m, has several lateral cones and a caldera measuring more than 6 km in diameter and as much as 700 m in depth. At the bottom of the caldera are a lake and a subsidiary crater. There was a catastrophic eruption in 1815, during which the peak of the volcano (4,300 m in elevation) was blown off. Tambora erupted again in 1847 and 1913. At present it is in the solfatara stage.