The aim of this paper was to present credibly the traditional customs, beliefs and traditional stories of the Duvno region. In some parts of the paper we can see how old people were inclined to believe in inexplicable phenomena and stories, and the essence of everything lies in that specific trait, because such stories get their meaning only when we believe in them. Other chapters show the diversity and complexity of the system of folk literature and how it has progressed throughout history: from narratives and transmission from generation to generation to recording the same customs in various books, articles, BA and MA theses. In this paper, in addition to presenting old beliefs which talked about all kinds of beings, I mainly referred to the customs of the Duvno region, which in the system of folk literature take on the characteristics of an endangered species. In other words, they mostly live only on paper, while in reality nowadays they are very rarely mentioned and nurtured; but guided by the thought that today the old becomes the new again, I hope that the old customs will come to life once again.