Gorge Dovzan is situated north from town Trzic. Torrential river Trziska Bistrica excavate it to old earthly stratum. River flows over cascade of immense rounded blocks white flintstone conglomerate. Gorge Dovzan is one of central points in Slovenian geological transverzal. It is protected as natural monument because of its unique location of remains fossilizied life plants and animals in stoneware old earthly century Palaeozoic. The oldest and the biggest founded samples of fossils are old around 270 million years. In this place were first founded and described numerous species of special fossils. Particularity of Gorge Dovzan is road tunnel and five pyramidal limy towers, Kušperg formations, where is also settled climbing. In the year 1979 were climbed first free scaled directions, here have begun first directions of ninth level. Through Gorge Dovzan are leaded forest way, geological way, mountain way, way to partisan printing office and belvedere way. In village Cadovlje stands Jemenšnik house, which was built in the year 1766. It is unique example of Karavanken architecture.