The dark tunnels in Znojmo

A network of underground passages under the historic old town reaches a total length of about 25 km and had been created by means of networking medieval cellars. They were carved into the foundation in the late 14th century, sometimes three floors deep. They were used for storing food and beer. During the German occupation, part of the corridors was converted into air raid shelters. In 1978, speleologists-amateurs discovered the so-called "luminous corridor", which became the greatest rarity and the secret of Jihlava. 49,403080 The walls of the corridors are covered by a whitish layer, which, after being illuminated, phosphoresces greenish.