Ecosystems:

Oak forests: there are 4 different kinds of oak trees that can reach 40 m. in height.

You can find palm heart plantations in the very humid and pluvial forests, multicolored mosses, many lichens, fungi and little vegetation in the moors (in the Cerro Vueltas).

There are 61 species of bats, like the red fruit bat, the funnel-eared bat and the eastern red bat, 25 types of rodents, 12 kinds of carnivores and the 4 species of monkeys found in Costa Rica: the squirrel monkey, the howler monkey, the spider monkey and the white-faced monkey. You can also see animals like peccaries, pacas, the singing vole, the pocket mouse, the cottontail rabbit, the ring-tailed cat, the northern naked-tailed armadillo, the woolly opossum, the two-toed sloth, the shrew mouse and the greater Grison.

This park is home to bird species like trogons, hummingbirds, the mountain hen, the common blackbird, woodpeckers, the yellow-bellied siskin, goldfinches, the yellowish flycatcher, the torrent tryanulet, the black-headed grosbeak, the flame-throated warbler, bellbirds, the Baltimore oriole, the brown-and-yellow marshbird, the fiery-throated hummingbird, the magnificent hummingbird, the clay-colored thrush, the bee hummingbird and the green heron.

Many of the reptiles that live in the park have reduced populations, such as the Central American banded gecko, the turnip-tailed gecko, the anole lizard, the rainbow boa, the sand boa, the boa constrictor and other lizard species. The endemic reptiles found in this area are the mountain lizard, which is a type of anguid lizard, and the Norops altae and Norops tropidolepis lizards.