Odwrócona góra albo film pod strasznym tytułem (2000)

Based on the book by Jerzy Niemczuk, this story follows Tatun, Mamuna, their son Sonek, and grandfather Lesavik – unusual but kind creatures living deep in the woods. When the children are trapped in the imposing Marbat castle, it's the grandfather's inventions – a kite, a znikolina, and a conusola – that provide their salvation.