Where is Tambora Indonesia? Tambora is a stratovolcano located on the island of Sumbawa, Indonesia. It is one of the most active volcanoes in Indonesia and has had over 60 eruptions in recorded history. The most recent eruption of Tambora was in April 1815, which is considered to be the largest eruption in recorded history. The eruption of Tambora created the largest volcanic eruption in history, which killed over 92,000 people and caused a climate change phenomenon known as the …