Along with the Santa Rosa National Park a biological corridor was formed to ensure sufficiently large habitats for different species. The park covers an area of approximately 350 square kilometers, and includes 140 species of mammals, over 300 birds, 100 amphibians and reptiles, and over 10,000 species of insects that have been identified. Several species of pioneer tress such us the Rough-Leaf tree, Guanacaste (National tree), Rosewood, the threatened Mahogany and more than 200 other species of trees and bushes are still some of the dwellers in this park.

The nearest city is La Cruz to the northwest, and the park contains several facilities notably the headquarters of the Guanacaste Conservation Area, as well as stations at Pitilla in the northeastern corner of the park, Cacao on the southwestern slope of the Cacao volcano, and Maritza which is situated in the lower slopes of the Orosí volcano. Both volcanoes are inactive but you can hike up to the summits. A network of trails will take you from one ecosystem to another such us from dry Pacific forests to dry elevation forests near the volcano craters or when crossing the continental divide to rainforest on the northern Caribbean side.