The Caño Negro Wildlife Refuge and the Rio Frío are biological humid areas considered to be one of the richest in biological diversity in Costa Rica. Here you can find a great variety of resident and migratory birds plus three different species of monkeys, also iguanas, sloths, turtles and Caymans.

Start with a transfer to Los Chiles, a culturally mixed village, located only 4-km from the Nicaraguan border. Here your boat waits for your river adventure, at that time we begin our 2, 5 hour floating safari through Tropical Rain Forest and pastures until we arrive at the marsh. An experienced English - Spanish speaking guide leads the tour. Along the river we can see howler monkeys, spider monkeys, white-faced monkeys, also the three-toed sloth and some reptiles like caimans, Jesus Christ lizard and turtles.