Tamarindo Wildlife Refuge &
Las Baulas Marine National Park

Four hundred and forty hectares of this park consist of a mangrove swamp at Tamarindo. There are six known species of mangrove that grow in this area of the Pacific Coast, where an abundance of black mangrove can be found, suggesting concentrations of salt in the soil of Tamarindo swamp.

Playa Grande is a very important nesting beach for the leatherback turtle (Baula is the Spanish name for this species). This is the world's largest and most wide-ranging sea turtle, nesting in beaches from Surinam to Malaysia and some individuals have been found as far north as Iceland and Scandinavia. Leatherbacks begin arriving in early October and nest until March, with the peak of activity occurring during November and December.

Ancient pottery has been found at the archeological sites of Matapalo and Herta Aguacate, adjacent to the park. The artifacts found are mainly bowls of different sizes that are decorated with blackish coffee colored engobe, and complicated geometrical designs.

The park is located on the Nicoya peninsula, near the town of Salinas, heading on Highway 21 to Filadelphia (26 kilometers), then 25 kilometers to Huacas and finally 8 more to Matapalo on a dirt road.