Legend has it that on Mount Tabor lived a pious widow who had a blind daughter. The widow is said to have seen a light on the lake below the castle every evening, which appeared and walked around the island in the middle of the lake. The man from the castle believed that the lamp was Mary and vowed that if her daughter missed it, she would build a church. The young woman missed it, the lake dried up, and now, as a thank you, the beautiful Church of the Ascension stands on the island. Throughout history, the name of the village has been preserved: Marija na jezeru/Mary on the Lake.
The church also mentions Valvasor and says about the village: “Slavina is a big and beautiful village”. Slavina has a rich past as a priory and chaplaincy, but over the years, Postojna has grown and acquired administrative functions. Postojna is now a deanery, and Slavina is only a parish. Despite its tumultuous past, this village in the Inner Karst has preserved its customs, and above all its more than 800-year-old tradition and reputation, as it is still considered a very important village and parish.