101 meters below ground on the 2nd level, the chapel is 54 meters long and 15m. wide. Constructed in 1896, designed by architect Józef Markowski, carved out of salt rock.
The chapel has been ornamented by miners who taught themselves the art of carving in salt. The main miner sculptors were: the brothers Jozef and Tomasz Markowski, and Antoni Wyrodek.
There are altars, wall friezes and statues all around.
The chapel is still used for regular Sunday worship.