The sanctuaries at Kumana 312 km. from Colombo, Wirawila 261 km. Bundala 259 km. and Kalametiya 224 km. are all lagoon locations in Sri Lanka's extreme south eastern coast. The Giant's Tank in the north western corner of the island is a huge ancient irrigation reservoir of 3,800 hectares. The coastal sanctuaries are exotically picturesque with combinations of lagoon, swamp, river, jungle, lake and plain. Large flocks can be found here of both resident and migrant aquatic birds. The highland sanctuaries at Udawattakele 118 km. from Colombo and the Peak Wilderness 141 km.