Podziemna Trasa Turystyczno-Edukacyjna w Starej Kopalni Uranu w Kletnie

Kletno Uranium Mine - Kopalina Uranium Mine - Kowary Tunnel

Useful Information

Location: At Kletno, near Lubin.
Open: 21-MAR to 19-OCT dialy 9-17.
20-OCT to 20-MAR daily 10-16.
Closed Easter week, 01-NOV, 18-DEC to 25-DEC, 31-DEC, 01-JAN.
Fee: Adults PLS 9, Reduced PLS 7.
Classification: MineUranium Mine
Light: LightIncandescent Electric Light System
Dimension: L=37,000 m, VR=280 m, T=7 °C, A=773 m asl.
Guided tours: L=200 m, D=35 min.
Address: Podziemna Trasa Turystyczno - Edukacyjna w Starej Kopalni Uranu w Kletnie, ul. Lokietka 5, 59-300 Lubin, Tel: +48-601-889-243.
Information and Reservation: Tel: +48-601-889-243, weekdays 9-17. E-mail: contact
As far as we know this information was accurate when it was published (see years in brackets), but may have changed since then.
Please check rates and details directly with the companies in question if you need more recent info.


mid 14th cty first mining activities.
16th cty first written mention of Jakuba Sztolni (James tunnel) and Mrocznej Sztolni (Mrocznej tunnel).
1948 uranium discovered, mine opened.
1953 uranium exhausted, flourspar (CaF2) mining continued.
1958 mine closed.
2002 show mine opened.


There are different veins found in the area of this mine. The Zyla magnetytowa (magnetite vein) had a thickness of several centimeters up tp 2.5 m. It was the medieval ore.

The other veins are called mineralizacji polimetalicznej (polymetallic mineralization) and contained a mixture of some 30 minerals. This included flourspar, sulfites, selenites and secondtary uranium minerals. The distribution of this veins was extremely irregular which made the mining difficult.


The Kletno Uranium Mine has in Polish an enormous name: Podziemna Trasa Turystyczno-Edukacyjna w Starej Kopalni Uranu w Kletnie which translates about touristic and educational tour of the historic uranium mine Kopalina at Kletno. It is also called Kopalina Uranium Mine and sometimes it is also called Sztolnie Kowary (Kowary Tunnel).

The mining near Kletno started during the Middle Ages, when iron, silver and copper were mined. Flourspar and marble were mined too later. But during the first half of the 20th century the mining boosted because of the Cold War, the polymetallic ores contain a certain amount of uranium, a pretty low amount if seen in absolute numbers, but because of the enormous importance of uranium of great value. It started soon after World War II, in 1948 an agreement between Poland and the USSR initiated a nation-wide search for uranium. In the same year an engineer from the Soviet Geological Service discovered uranium ore in Sankt Paul tunnel at Kletno. Uranium mining started.

During the heyday of the uranium mining 20 shafts connected 37 kilometers of tunnels on three levels. A total of 20 tonnes uranium ore were extracted. A total of 228,000m³ of rocks was brought up from the mine and deposited on the . The uranium mines were worked with modern technology, and so this tour actually shows the mining technology of the mid 20th cetury which is already based on the use of heavy machinery in a wide range. The tunnels are of rather comfortable size, especially compared to the claustrophobic, handdug, Medieval tunnels. The passage is 1.5 m to 2 m wide and 1.7 m to more than 2 m high.

The show mine of today is located at an scenic bend of the Klesnica River Valley, on the road from Kletno to Sienna, in a tunnel which was called Tunnel No. 18. It is also called Sztolni Fluorytowej (Flouride Drift). Some 200 m of the tunnel have been developed and there are numerous outcrops of minerals and ore, especially of fluoride, fluorspar, amethyst, quartz and others. The tunnel is located at an altitude of 773 m asl and is one of the highest parts of the mine. Actually the lower parts of the mine are flooded now, after the pumps were shut down.

The officials tell, that a visit to this mine includes the exposure to ratiation. Of course there is some radiation caused by the various radioactive minerals. On the other side the amount of this natural radiation is very low, comparable to the radiation on very high altitudes, on a plane or on a mountain top. The amount of radiation for the length of the normal tour is actually absolutely harmless. For the miners the daily work under this radiation was not good for their health, but it was probably the least problematic danger of the mining in comparison to lethal accidents, silicosis and poisonous gas from the explosives.