The Llanganates are located on the eastern mountain range of the Ecuadorian Andes and present steep slopes, bare rocks, and sharp cliffs, from where streams violently fall. Both on the moorlands and the Andean forests that cover the eastern slopes of the mountain range, the terrain is of difficult access. In certain areas the topography smoothes out and gives place to the formation of lagoons and the development of giant frailejones, another of the unique characteristics of this park. In this steep terrain there are no protruding peaks, but the most important elevation is Cerro Hermoso or Yurac Llanganati,with a height of 4,571 meters. In the area the rivers Negro, Pastaza´s tributary, and Mulatos, Napo´s tributary.