Borlachschacht, Borlachstrasse, Borlachschule, everywhere you come across the name of the Royal Polish, Electoral Saxon mining councilor Johann Gottfried Borlach, who led the development of the brine springs and the construction of the salt works, which ultimately then led to the permanent settlement of today's urban area. Only a few people know that Gottfried's younger brother Johann Herrmann was also significantly involved in his capacity as vice director. In 1768, he took over the directorship of the Electoral Saxon state salt works of Arten, Kösen and Dürrenberg and prepared the reorganization of the Electoral Saxon salt works together with the Saxon General Mining Commissioner Fr. A. von Heynitz and the Mining Councilor Freiherr L von Beust.

Even today, the Borlach shaft is open during the spa season from April to October and visitors have the opportunity to tour it. Public tours are offered by the local tourist information office. Technical data: Depth 175 m Cross section 3,75×3,10 m, Once existing number of piston pumps: side by side 2, one above the other 8 each 5 m high. The shaft was sunk in 1731-35 and developed brine of 5.13% salinity. The brine comes from the Röt, where the salt deposits are subject to dissolution by fresh water.