Geological exhibition in Opava.

     In addition to several geological expositions in Opava and the surrounding area:
 
      - a stray boulder on Praskova Street (named after the prominent founder and later president of Matica Opavská, who became the first director of the Opava Gymnasium at the end of the nineteenth century and was above all a linguist. Together with Jan Havelka – another important figure in the highly educated Wanklov family, in whose footsteps proudly…