The archaeological site GRADAT is about 3 km away south-east from Kramolin village. The site is naturally protected by 60 - 90 meters high rocks on 3 sides, going down towards a small river inthe forest.
The Medieval remains include bases pf churches, stone walls and arches, ceramic kilns for building materials. Historians date the fortress back to 12-14-th century, but also there are presumptions that it probably existed from the Roman period.
A necropolis with more than 100 burials was found around one of the churches.
The view from the rocks and over the big water reservoir to the south is impresive.
A picnic place is build at the feet of the fortress, but no drinking water in the locality.