According to records, during the Lithuanian-Swedish war 300 years ago, the bell of Plateliai church belfry was taken down, and it was being carried over the ice of a frozen lake when the ice broke near Castle Island and the bell sank. 100 years later, an expedition of divers organized by Count Choiseul searched for the sunken bell. It is said that they found the bell but, for reasons unknown, they let it sink again. It is also said that the sound of the sunken bell can be heard from the depths of the lake. A film crew organized an expedition in the summer of 2006 together with a team of divers to trace the sunken bell.