Poland

Poland Salt Stamp
Polish commemoratives for Wieliczka rock-salt mines issued July 14,
1979 depict a C17th horse treadmill (1z) and salt crystals (1.50z).

Plunging to a depth of 327 metres (1,073 ft), and extending via horizontal passages and chambers for over 287 kilometres (178 miles), the Wieliczka Salt Mine produces rock salt in naturally of varying shades of grey, instead of the white crystalline minerals that might be expected. As early as the thirteenth century, brine welling up to the surface had been collected and processed for its salt content. Wells were sunk, and then first shafts were dug to acccess rock salt. Located in the town of Wieliczka, near Krakow in southern Poland, Krakow Salt Mines produced table salt continuously until 2007 (although commercial mining ened in 1996). The mine with its underground lake, 3.5-kilometre (2.2-mile) walking path and historical exhibits is now a UNESCO World Heritage Site.

Poland Salt Stamp
Polish stamp depicting Wieliczka rock-salt mines to promote tourism issued July 23, 2018.

The mine is featured on a Polish postage stamp promoting tourism issued on July 23, 2018.

Poland Salt Stamp
"Treasures of the Earth: salt" - Joint Issue with Croatia issued December 2,
2021 depicting Ston Saltworks, Croatia and Bochnia Salt Mine, Poland.

Sources

"Wieliczka Salt Mine". nd. Web. 20 Jan. 2023.
www.wieliczka-saltmine.com/.

"Wieliczka Salt Mine". Wikipedia. 27 Nov. 2022. Web. 20 Jan. 2023.
en.wikipedia.org/wiki/Wieliczka_Salt_Mine.

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