Dragonja is a very interesting river in Slovenian Istria. Even though it is in the middle of rural and quite populated coastal area, the upper part is quite a wilderness, where one doesn’t usually meet many people. The main characteristic of the valley are thick horizontal layers of stone that make a unique look of the riverbed. These horizontal stone layer also creates waterfalls on several inflow creeks that flow over them. In the past the valley was much more populated and there can still be seen many ruins of mills and other buildings – some of them also restored.