Lake Toba is the largest lake in Indonesia and the largest volcanic lake in the world. An eruption between 71,000 and 74,000 years ago expelled roughly 2,800 cubic km (about 670 cubic miles) of ash and lava, which, according to some scientists, plunged the planet into an ice age that nearly caused the extinction of modern humans. It is the largest-known explosive eruption on Earth in the last 25 million years. And then, on that lake, we have Then, it’s the biggest lake in Indonesia. Mount Toba erupted. Mount Toba, ancient volcano located in north-central Sumatra, Indonesia. Its odd elongate shape is a result of the interactions between the magma chamber and the shearing forces of the Sumatran Fault along the west that has stretched it out. Located on the island of Sumatra, in Indonesia, Lake Toba is a beautiful caldera lake, measuring 100 km by 30 km. It formed a caldera in the west of the region. Recent advances in dating methods suggest a more accurate identification of 74,000 years ago as the date. Toba is a supervolcano that sits towards the north of the Indonesian island of Sumatra. It spreads across 100 km long, 30 km width and its depth reach 526m. Lake Toba is the site of a supervolcanic eruption estimated at VEI 8 that occurred 69,000 to 77,000 years ago, representing a climate-changing event. 33,000 years ago It had an estimated Volcanic Explosivity Index of 8 (described as “ mega-colossal “), making it possibly the largest volcanic eruption within the last two million years. First, Lake Toba is the location of the biggest known eruption 75000 years ago. The Lake Toba Super Volcano Eruption The Toba eruption (the Toba event) occurred at what is now Lake Toba about 71,500 ± 4000 years ago. Yes, the lake is actually a supervolcano (like Yellowstone) and it’s not actually extinct (easy tho, they erupt VERY rarely).

earth-historical eruption of a super volcano 74,000 years ago.
The subsequent collapse eventually led to the formation of a joining caldera, which was later filled with water, and Lake Toba was born. If you haven’t heard of Lake Toba, you soon will.