The park is made up of hilly and mountainous terrain with limestone and sandstone deposits as well as numerous valleys, canyons, gorges, rivers and dense deciduous and coniferous forests.

Close to Petran is the narrow and deep Lengarica Canyon with numerous caves and thermal springs such as Banjat e Bënjës.

In terms of hydrology, Vjosa is the main river forming the western bound of the park, flowing through Përmet until discharging into the Adriatic Sea.

[2] Due to its favorable ecological conditions and the mosaic distribution of various types of habitats, it is characterized by exceptionally rich and varied fauna.

Environmentalists are challenging such activity by holding protests in Tirana as works are underway in the affected area which could damage ecosystems and the livelihood of those catering to the tourism industry.