Ortoire
The Ortoire River is the largest river in Trinidad and Tobago. It forms the boundary between Nariva County and Mayaro County in east Trinidad.
It is green in color and it once had an iron bridge with wooden planks but it has been replaced by an all paved concrete bridge; also it was made higher to reduce flooding. The river is famous for giving off light which usually appears blue in color every 10 years, this is due to the bioluminescence of living organisms residing in the water.
Coordinates: 10°20′N 61°00′W / 10.333°N 61.000°W
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