The crypt is located under the presbytery of the church. It was built in the lst half of the fourteenth century. The interior is covered with a twelve-sided palm vault supported by polygonal central pillar of granite sandstone. Rib vaults are profiled and complete with figures of heads with different ex-pressions. The interior is lit by smali windows.
In the northern wali of the south aisle you will find Gothic door leading to the crypt. In Silesia, Gothic vaults can be found in St. Martin church and the church of the Holy Cross in Wrocław.
Each year, the Jesuits built the tomb of Christ in the crypt Hence the name of the crypt: burial chapel.