Toba Lake

Once upon time, there was a fisherman who lived in North Sumatra. One day, when he was fishing in a river, he got a big fish, beautiful big fish. He was so excited. Then he went home and put the fish in the bucket. But when he wanted to kill the fish, he felt so pity with it.
In the next day, he went fishing again. But this time, he could not get any fish. He was so hunggry. Then he went home with empty-handed. After got there, he was surprised, there was a girl there.
“Who are you?” asked the fisherman.
“I’m the fish” replied the girl.
The fisherman looked at the bucket where he took the fish yesterday.
“You didn’t kill me yesterday, and I’m very thankful. I will return your kindness” continued the girl.
“well, I lived alone. I don’t have any family. If you want to be my wife, I will be happy” asked the man.
“Ok, but you have to promise to me. if we have children, don’t tell him about me. If you tell him, the very bad thing will happen.” The girl said.
Finally, the fisherman and the fish girl were married. And had a child named Samo. Samo was very naughty boy, he always play with his friends and never help his parents.
One day, Samo was asked to deliver lunch to his father. But on the way to his father, he met his friends and play with them till he forgot to deliver the meal. Meanwhile his father waited with tired and hungry and finally the father decided to go home. On the way to home he saw Samo.
“Samo… where is my lunch” asked his father.
“Mmmmm…. I ate it dad.” replied samo.
“why you eat my lunch” asked his father angrily.
“I’m hungry after play with my friends, I’m sorry dad” Samo said.
“you are naughty samo, don’t come home anymore. You, damn fish’s son” said his father angrily.
Becasue the father broke his promise, suddenly the sky was getting dark and the rain fallen down. The water was getting higher and higher. Samo’s mother was sad and transformed to be a fish again. Samo run to the hill and stayed there. The water drowns the village. Then the hill surrounded by the lake.
Now the lake was known as Lake Toba (no marcy) and the hill in the middle of the lake was called Samosir (evicted Samo)  island.