these tanks are the Kala Wewa and Balaluwewa, which are interconnected and cover an area of and 7000 acres are/were cultivated from this huge volume of water.He had also built Padaviya Wewa(Dana Wewa), Yodha wewa(Manamuthu Wewa), Meddaketiya Wewa and Maeliya Wewa. He also constructed the Yodha Ela, also known as Jayaganga, an irrigation canal carrying water from Kala Wewa to Tissawewa tank in a journey of approx. 54 miles from Anuradhapura. Yoda Ela descends 95 millimeters at each kilometer. This is regarded as a great technological achievement. The Avukana Buddha statue, a high statue of Gautama Buddha, is also a creation of Dhatusena.Lahugala Magulmahaviharaya was also built by this king. Further reports suggest that there was a tradition of coronating a Buddha sculpture and thus havening the king's powers under the auspices of Buddhism which would make it possible for the king to govern the country in unity. He also had installed Vajra-Chumbhatas(lightning rod) on the top of the three main dagobas in Anuradhapura. The Culavamsa describes this king as the builder of 18 vihara (temple complexes). For an example, he restored the ''Mahapalidhanasala'' into its original state. During his reign a redaction of the Pali Tipitaka ("3 baskets", the theravada canon) took place. Death Dhatusena had two sons, Kasyapa I, Moggallana I and a daughter. Moggallana was the son of the royal consort and the rightful heir to the throne, while Kasyapa was born to a non-royal concubine. Dhatusena’s daughter was married to his sister’s son and the general of his army, Migara. Later, as a consequence of an argument between his daughter and her husband, Migara, she was severely tortured by him which in turn enraged Dhatusena who then ordered his mother (Dhatusena's sister) to be burned alive. In reprisal, Migara encouraged and assisted Kasyapa to overthrow the king and take the throne. Kasyapa eventually rebelled against Dhatusena and overthrew him. Dhatusena was imprisoned and Kasyapa became the king of the country in 473. Migara led Kasyapa to believe that Dhatusena had hidden treasures of great wealth and persuaded him to find these. When asked to lead Kasyapa to where these treasures were hidden, Dhatusena led him to the Kalavewa and taking water into his hands, claimed that this was the only treasure he had. Enraged at this, Kasyapa had him murdered by immuring him in a wall. (an alternate story is that he was buried alive in