Which volcano has the deepest caldera lake in the world?

Lake Toba fills the caldera created by the massive Toba supereruption on Sumatra about 74,000 years ago. The lake is about 100 kilometers long and 30 kilometers wide, making it an immense volcanic basin. Its depth is significant as well, with parts of the lake reaching several hundred meters. Toba is an iconic supervolcano site because it preserves the scar of one of Earth’s largest known eruptions. The lake and surrounding landscape attract both geologists and tourists.