Keywords: Cerkniško jezero s sifoni-Valvasor.jpg A hydraulic model of the intermittent Lake Cerknica in Slovenia Author Janez Vajkard Valvasor Date 1689 Technique Copper engraving PD-Art Engravings of The Glory of the Duchy of Carniola Historical images of Lake Cerknica Hydrogeological cross sections Geological cross sections of Slovenia Artworks missing infobox template |