The Notranjska region is a typical karst landscape with numerous karst phenomena. Postojna Cave, Predjama Castle
and Škocjan Caves
boast the most wide-ranging souvenir offer.
Places around the intermittent Lake Cerknica
, which has been the subject of explorations from as early as the 17th century, mostly offer mascots of witches or sorceresses
, which are said to reside in Slivnica above Lake Cerknica.