Toba Lake is the largest lake in Southeast Asia located in North Sumatra, Indonesia. According to local legend, the lake was formed when a young man married a magical golden fish that he had caught. They had a child together but the man broke his promise never to say the child was born from a fish. In anger and sadness, the fish woman and child disappeared into a great storm that filled the area with water to create Lake Toba. Today, the lake is considered sacred and stories say its guardian spirit is the fish woman who still protects the lake's immense depth.