The Tenorio National Park is formed by a myriad of natural resources of unparalleled beauty. One of the most attractive features is the Rio Celeste or "Light Blue River" You will encounter a phenomenon of nature and chemistry when you get to the Tenideros (the stainer) which effect is provoked by the emanation of sulphuric gases from the bottom of the river and the precipitation of carbonated calcium delivered by a stream that dumps into the main river at this point. This place is amazing and features a challenging 4-5 hour hike through nature and viewing the light blue river. You will find hot springs that will amaze you with small pools of hot water next to a cold water river. Due to the variable climate , Volcan Tenorio National Park is home to many different species of plants and trees. Some of the most watched species of animals here are: tapir, collared peccary, howler monkey, white-faced monkey, spider monkey, wild cats ( puma, margay and ocelot ), birds like three-wattled bellbird, turkey vultures and different roadside hawks and tanagers. This is the real rainforest with average rainfall of 4.000 millimeters per year. The rainy season is May to January when the average temperature is 24° C ( 75º F )
So get ready to get muddy, wet and amazed with Rio Celeste.