This 9969 hectare refuge is of interest especially to birders, who come to see a variety of waterfowl including anhingas, roseate spoonbills, storks, ducks, herons, and the largest Costa Rican colony of the olivaceous cormorant. The refuge is the only place in Costa Rica where the Nicaraguan grackle regularly nests. The reserve is remarkable, also, for its healthy population of endangered mammals species, including jaguars, cougars, tapirs, ocelots and tayras. There are always sure to be plenty of monkeys playacting. And the crocodile colony is perhaps the best-protected in Costa Rica, though caimans are far more numerous and easily seen. The Rio Frio, which cuts through the refuge, makes an ideal waterway for guided boat tours into Caño Negro.

91 km north of La Fortuna.
Opening hours: Daily from 8:00-16:00.
It may change without notice.