While in Poland, we visited the salt mine at Wieliczka. Miners have been working here for hundreds of years, starting in the late 13th century.

Not all of the salt in a mine is of commercial value. Some is too intermixed with other minerals and rock to be harvested. At Wieliczka, the miners have a tradition of creating elaborate sculptures out of this unusable salt. One chamber we visited was stunning—an entire chapel carved out of salt, complete with pews. This picture shows one wall of the chapel.

Submitted for Lens Day challenge Crystalline.