Three kilometers from Durgapur Upazila Sadar, the traditional Komola Ranir Dighi is located near Birishiri Union Parishad. It is also popularly known as Sagar Dighi to many. According to tradition, in the latter part of the fifteenth century, King Janki Nath of Susong Durgapur married a beautiful woman named Kamala Devi. A son was born in the house of King Janki Nath, a benevolent king. The child was named Raghunath. King Janki Nath dug a pond to alleviate the water scarcity of his subjects. But the king was worried because the water did not rise in the pond.
Then one night, the king saw in a dream that if Queen Kamala Devi went to the middle of the pond and worshiped it, the pond would be filled with water. The queen also agreed to perform puja in the middle of the pond thinking of the subjects. Suddenly the water rose all around and drowned the queen Kamala Devi. According to many, lightning caused the soil at the bottom of the lake to crack and fill with water. Raja Janki Nath was disturbed by such an incident. Always worried about the king's son Raghu. Again, one night the king saw in a dream that if he left the infant Raghu on the bank of the pond, the queen Kamala Devi would be able to breastfeed Raghunath. But the condition is that the king cannot touch the queen in any way.
Raja Janki Nath used to leave his child on the bank of the pond at night. Rani Kamala Devi used to feed the child with breast milk and then disappear into the water. One day the king wanted to touch the queen. But the queen merged with the water. Since then he never came to breastfeed his child.
The king saw in a dream that if his son Raghunath could breastfeed for another 7 days then he would be considered victorious and a glorious hero. According to history, Susong Durgapur was established as a powerful pargana during the reign of King Raghunath. It was Raja Raghunath who attacked Jangalbari Durg and defeated Chand Rai, Kedar Rai, the zamindar of Bikrampur, and was awarded the title of Maharaja by the Mughal emperors.
Currently Someshwari river flows through Kamala Rani Dighi. The southern and western banks of the Dighi still stand as witnesses of time. A part of the bank of the pond has been settled, and some part is used as cropland.