Legend of Lau Kawar is a North Sumatran folk legend about an ungrateful son who does not honor his mother. Today Lau Kawar known as the name of a lake at Karo Regency. But people believe that Lake Lau Kawar was once a village named Kawar. Kawar village drowned in a crater lake following an earthquake and heavy rain. The disaster was caused by God who listened to the prayers of a mother asking him to punish her sinful son.
References
Legend of Lau Kawar Wikipedia(Text) CC BY-SA