HISTORY

They were discovered in 1834 by Manuel Sainz de la Peña Miranda and in 1936 declared  National Park by then-President Lazaro Cardenas del Rio, before these places were inhabited by tribes after the Olmecas Chontales who used the caves for ceremonies and worship their gods.It was declared a National Park on Junuary 20, 1936. 

 GENERAL INFORMATION

It has an altitudinal range between the 960 and 18000 meters. It climate is warm and semideciduous forest vegetation represented by Bursera bipinnata, Busera and Busera copallifera joullinsis, for the devolopment of tools using the candles and Crescentia (crescentia alata). 

The park features limestone hills, crossed by the groundwater  in the rivers of San Jeronimo and Chontalcoatlán that converge in the resurgence of dos bocas and the form the Amacuzac river, tributary of the Balsas, and empties into the Pacific Ocean. 

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