The tunnels through the conglomerate rock stretch across 1300 metres. They are man-made, but the climate there is similar to natural caves, so there are dripstones and rare animals like cave crickets and cave orbweavers. Inside a tunnel, you can take a look at an exhibition on the history of the underground of Kranj and its builders, Josip Slavec and Josip Dedek.
There is also an exhibition of minerals and fossils and a reconstruction of a WW2 shelter where you can witness a simulation of an airstrike.
When the Tunnels under the old town of Kranj were opened to the public, they received an award for creative and innovative achievements in Slovenian tourism – the silver Sejalec. Explore the network of the underground of Kranj that lies hidden.