Characteristcs: One of the country's most historically significant parks, protecting one of the last remnants of dry Pacific forest.

Fauna: 115 species of mammals, 253 birds, 100 reptiles, 3,000 species of butterflies and moths.

Flora: Tropical dry forest, deciduos forest, savannah woodland, oak forest, evergreen forest, mangrove swamp, riparian forest, xeromorphic forest and littoral woodland.

Importance of the Park: Historically: The ranch house known as "La Casona" and the colonial stone corrals were the site of the Battle of Santa Rosa, fought on March 20, 1856.

Ecologically: Nancite and Naranjo beaches (located within the Park boundaries) are important nesting sites for the olive ridley, leatherback and Pacific green sea turtles. Nancite is the beach where the largest arribadas of olive ridley sea turtle take place in all of Tropical America.

Services for visitors: Campground, trails, picnic areas, rest rooms, showers and potable water.