Encompasses the Dari n, Sapo, Jungurudo and Pirre mountain ranges as well as the Jurado mountain chain and basins of the Tuira, Balsas, Sambu, Jaqu Rivers and part of the Chucunaque River.
Access is by river and heavy truck.
The boundaries still remain to be legalised. Declared a national park on 27 September 1980 by Presidential Decree No. 21. This park is in a unique geographical position, as it forms a land-bridge between the Central and South American continents. It has emerged from below sea-level on several occasions, the most recent being in the early Pleistocene. The eastern part is primarily of volcanic origin covered with sedimentary rock of the Cenozoic period.