The area is located in the northern part of the prefecture of Ioannina, at an altitude of 1300 meters and has an area of 22,000 hectares. It includes a hilly area covered with oak forests (including the villages of Meropi, Oreokastro and Delvinaki.), Small ravines, springs and streams, a part of Mount Dousko (southwest slopes), the small lake Zaravina and the river Gore. Gormos originates from Douskos and flows in the area from Oreokastro to Parakalamos. In the Delvinaki area the forest consists of Querqus frainetto, Q. Cerris, Q. pubescens and Q. trojana, as well as some characteristic species of the Ostryo-Carpinion union, such as Carpinus orientalis, Ostrya carpinifolia, Fraximus ornus and Acer sp. The Juniperus communis ssp. alpina forms shrubs in the area of Mount Dusko.
Regarding the types of habitats, the area includes eutrophic natural lakes with vegetation type Magnopotamion or Hydrocharition, steep mountain rocks of central Greece, Beech forests of the Luzulo-Fagetum plant community, Greek beech forests with Abies borisii-regis, D with Salix alba and Populous alba, Oriental plane trees, Oriental plane trees (Platanion orientalis), Woody plant communities with Juniperus foetidissima.
The wider area is under protection as a prey sanctuary at National and Regional level and Internationally as an important Bird Area. The importance of the area lies in the fact that many important plant species are found. Of note is the species Solenanthus albanicus listed in Annex II to Directive 92/43 / EEC, the Berne Convention and the WCMC list as rare. This plant grows in areas that are heavily grazed and is considered endangered. Finally, the animal species are protected: Testudo hermanni, Elaphe quatuorlineata, Elaphe situla.