most deadliest volcanic eruption Tambora, Indonesia 1815
Mount Tambora, Indonesia â 1815. The 1815 eruption of Mount Tambora was one of the most powerful in recorded history and classified as a VEI-7 event. Mount Tambora is on the island of Sumbawa in Indonesia.The eruption that began on 10 April 1815 was followed by between six months and three years of increased steaming and small phreatic eruptions.ount Tambora is on the island of Sumbawa in Indonesia. The eruption that began on 10 April 1815 was followed by between six months and three years of increased steaming and small phreatic eruptions.