The volcanic Lake Toba, which was formed due to a massive volcanic eruption more than 70,000 years ago, is located on the island of Sumatra, surrounded by majestic mountain scenery from all sides, with a length of up to 100 km, which means that it is the largest lake in Southeast Asia, and many visit it From tourists to enjoy calm and relaxation, swim in the warm sulfur waters, and eat in nearby restaurants overlooking them.