A group of divers from a civil organization discovered the longest in the world in the Riviera Maya, on the Caribbean coast underground river, officials said.
The director of tourism in the state of Quintana Roo, Lenin Amaro Betancourt, Solidaridad municipality told reporters that the river was named Sac Actun, and has 155 kilometers long.
He said that with this discovery, the three longest underground rivers in the world are under the floor of the Riviera Maya.
The other large underground rivers in the area are the Ox Bel Ha system, with over 146 kilometers long, and the Dos Ojos system, with nearly 58 miles long.
Many of these underground rivers, which are largely a mixture of fresh and salt water flow into the same Caribbean Sea, the official said.