The Experimental Mine "Barbara" in Mikołów is the only research and scientific post in Poland and in Europe, with an experimental range for testing devices, equipment, materials and procedures in real underground conditions. Click on the image to learn more. Feature image source: https://undergroundlabs.network/laboratory/gig-experimental-mine-barbara/

Pay a visit to the Coal Mining Museum of Velenje in Slovenia. Take country's oldest operating lift and descend into the tunnels located in one of the thickest layers of coal in the world. Click on the image to learn more. Feature image source: https://www.visitsaleska.si/en/products/velenje-underground-en/

In order to discover how the lakes in Salek Valley were formed, click on the image to start your magnificent time travel in Slovenia. Feature image source: https://www.visitsaleska.si/en/saleska-valley/lakes-in-salek-walley/