Keystone of the portal of a mine transport gallery in Niederhäslich (Freital) of the Segen-Gottes-Schacht Burgk (Freital); i.e. „Blessing-of-the-Lord-Mine”. The 317 m long gallery was initally required for conveying the refuse of the underground colliery and later on for channelling water to water works and a steam engine. Built 1856—1858; restored and secured in 2001.