Brenna coat of arms The contributions of the Municipality of Brenna to bats include active protection of Lesser Horseshoe and Greater Mouse-eared bat the habitats and the creation of the observatory, allowing watching of the bats in a way that is safe for animals. The Brenna local government has also introduced legal protection in the form of a documentation site (SSSI) for an important bat hibernation roost. Portal of Brenna (in Polish)