[1] It evolved from already existing conservation areas, such as Cibodas Botanical Gardens, Cimungkat Nature Reserve, Situgunung Recreational Park, and Mount Gede Pangrango Nature Reserve, and has been the site of important biological and conservation research over the last century.

The mountain slopes are very steep and are cut into rapidly flowing streams, which carve deep valleys and long ridges.

The park contains a large number of species known to occur only within its boundaries, however, this may be a result of the disproportionate amount of research over many years.

On the other hand, the main tributary of the Cimandiri River basin flows towards the southern coast of Java and drains into the Indian Ocean.

Other mammals include the Javan leopard, leopard cat, Indian muntjac, Java mouse-deer, Sumatran dhole, Malayan porcupine, Sunda stink badger, yellow-throated marten, and Bartels's rat.