The region of Cerkno lies between the Alpine and the Karst-Coastal regions in the western part of Slovenia.
The town Cerkno (324 m above sea level) is the centre of the hilly region in the west of Slovenia. It lies in the valley of the river Cerknica at the foothills of the Porezen (1630 m high), the mountain on the border between Primorska and Gorenjska regions, not far away from the Julian Alps’ range. Along the valleys of the rivers Soča and Idrijca there comes the Mediterranean climatic influence, so the climate is fairly mild despite the adjacent mountains. The region certainly does belong to the wider Primorska region.