Another card from mchomka from Poland . It was send via the Slavic Countries RR and shows a nice UNESCO site; Weukucxka salt mine. A new one to my collection! I hope to see this UNESCO next summer, when I will visit Poland.
This deposit of rock salt in Wieliczka-Bochnia has been mined since the 13th century. Spread over nine levels, it has 300 km of galleries with works of art, altars, and statues sculpted in the salt, making a fascinating pilgrimage into the past of a major industrial undertaking.