This river is on the coast of the Carribean and is 52 km long, beginning in the Fila Matama Cordillera of Talamanca, in an area that receives a lot of rain, some 37% mm, every year. It is almost always covered by the fog. Its flow irrigates the Valle de La Estrella, fundamentally dedicated to the cultivation of bananas. Although you can also see cocoa and guanabana plantations here. They are protected by the same blue plastic bags as the banana trees, covered in insecticide. Millions of cocoa seeds are laid onto platforms to dry in the sun. At its mouth, the river creates several streams and canals which can be used by boats. They are covered in vegetation. This provides shelter for some 180 species of birds, some of them migratory. At sunset thousands of garcilla bueyeras rest on the tree branches along the banks to preen themselves and this is an amazing spectacle. The Valle de La Estrella is a way to access the Hitoy Cerere Biological Reserve. There are buses that leave the Caribe Terminal from San José at 03:00 p.m, returning at 06:00 a.m the following day.