In the northeastern sector of the reserve, the seasonal floods of the river Grande de Tarcoles form several marsches. There is also abandoned meander of the river that is about 600 metres long, 40 metres wide and 2 metres deep. It`s carpeted with water hiacynts and other aquatic plants and is home to large crocodiles and numerous birds. The wildlife includes two-toed sloth. Within its boundaries there are some archeological sites: Carara (a rectangular foundation made of river rocks and calcified stones) and Lomas Entierro (traces of village on several hills). In 2002 there was found the specie of moth which was named after astronaut Franklin Chang (Pheneus Changdiazi).

NATIONAL PARKS