THE LEGEND OF LAKE TOBA

Once, a fisherman name Batara Guru Sahala lived in Batak Land. One day, he caught a fish. To his surprise, he found that the fish could talk. It begged Sahala to set it free. Sahala did accordingly.
As soon as the fish was free, it changed into a woman. She is so beautiful that fisherman fell in love with her at once. He asked her to merry him. The woman agreed to marry Sahala. However, she told him that he must never let otu the secret that she was once a fish. Sahala promised her that he would not tell anyone about it.
They were happily married and had two daughters. Every morning Sahala went out fishing. His daughters would bring him his lunch. One day, however instead of bring the food to their father, the girls ate it. When Sahala learnt what they had done with his meal, he got very angry. He shouted at them saying,'' You behaved exactily like the daughters of fish.
The girls did knows what their father meant. They went home and asked their mother about it. When they told her what he had said, she was very annoyed. Although Sahala apologized to her leater, she would not forgive him for break his promise. Then, the earth began to tremble, and volcanoes started to erupt. The earth cracked to from big hole. People said that this hole became lake Toba. The story teaches us to be not promise if you can not doing that