(35.000 ha), (1991). It was created by biologist D.H.It protects tropical dry forests, rainforests and very moist forests and pasture lands that extend in natural succession from 200 metres a.s.l. on the Guanacaste plain to 1.659 metres a.s.l. in the Guanacaste Mountain Range. It`s estimated that it houses 2.250 plant species, 125 species of birds, 25 mammal species and 1.800 species of insects. The wildlife of the moist and very moist volcanic slopes of Orosi (1.487 m.a.s.l.) and Cacao (1.659 m.a.s.l.) include howlers and white-faced capuchin monkeys, tapirs, sloths, jaguars, collared peccaries and three-wattled bellbirds. The middle ground provides a refuge for currasows, white-tailed deers and fer-de-lance snakes. At the bottom of Orosi Volcano, in the place called El Pedregal there are petroglyphs.