Yodha Wewa in Mannar, Sri Lanka

Yodha Wewa (Kaddukarai Kulam) is a giant irrigation tank in Mannar district Sri Lanka. It was constructed by king Dhatusena and restored by king Parakramabahu. The wewa and its surrounding are declared one of Sri Lanka's sanctuaries. The water that comes from Malwathu Oya is the input water to this wewa, and the inlet channel is Aalawakka – ela from the Thekkama Amuna. The total storage of the tank is 26600 acres ft, and the water spread area is 4550 acres.
A
Tamil author named Mudaliyar C.Rasanayagam stated some facts in his book 'Ancient
Jaffna' mentioned below.
''The
existence of the extensive ruins at Matota and of the celebrated Giant's Tank
close to it are indubitable signs of an immense population well advanced in
agriculture. This tank is apparently the most ancient work extant in Ceylon, so
ancient that it is not mentioned as having been built by any of the kings who
reigned in Ceylon after Vijaya. The Giant's tank must, therefore, have been the
work of the remotest times, constructed probably by the ancient Nagas, who were
the people then living in that part of Ceylon''
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