This lagoon is located between Moron City and Jardines del Rey Tourist polo and is the largest natural reservoir in Cuba, with a surface area of 66 km2. It provides a haven for flamingos and a variety of other bird species as Tocororo, carpintero churroso, Mayito de Ciénaga, cernícalo, aura tiñosa, zunzún, martín pescador, falcón, gavilán del monte, and some migratory as huyuyo duck.