The quarry in Lesno Brdo has been famous for more than 150 years as a fossil shell site. The site also has a wonderful tectonic fold. Dark grey and black bedded limestone, alternated with marl. The rock was quarried due to the strong colour contrast and used for architecture. At the quarry there is a Geological key showing the major rock types of the region and a display of sculptures from different Stonemason workshops that took place in the quarry.