The Natural Heritage Trail leads to nature reserves where rare species of flora and fauna are protected. They include the Kajasówka reserve
in Czernichów, the Kozie Kąty reserve
in the Bronaczowa Forest in Radziszów
and the Cieszynianka reserve
in Mogilany. There are also a few unprotected sites where one can find species threatened with extinction, such as the thick-shelled river mussel (Wola Radziszowska), and the large blue (Kajasówka reserve and Skawina). Beavers live on Cedron
at Wola Radziszowska.