The ancient town was founded to process brine

from a naturally-occurring spring to salt to trade.

This is the town that a Salt Spring built. Archaeology has discovered signs of saltworks dating to about 250 BC. Due to limited excavations, it is not clear if the early Celtic occupation morphed with in-coming tribes or if a landslide covered the spring. Medieval lore dates the “discovery” of the saline spring to the 9th century. First mentioned in a document of 1037, the main church of the town, St Michaels, was consecrated in 1156. By the early 1300s, the salt spring was treated as private property, operated by a closed group with ownership divided into 111 units (called pans). As the laborious work of chopping trees for firework, carry saltwater from the spring to large iron pans, maintaining the “Haal House” and stoking the fire to boil off water to recover & purify the salt grew expensive & tiresome to the monasteries and nobles who owned the rights; gradually starting in the 1400s, they transferred the property to specialized workers, called Salzsieder. By the 1500s, a group of 40 families had accumulated ownership of 50% of the saline. Salt sales to the left bank of the Rhine resulted in return trips laden with wine to sell; which made many of these families very wealthy. The town’s height of importance as an Imperial City (not subject to the Duke of Württemberg) ended with the 30 Years War. Later when, Napoleon’s conquests re-drew the structure of many German states, Hall was forcibly occupied by the King of Württemberg. He confiscated the saltworks but was unable to operate it. A settlement treaty resulted in a eternal pension to the Salzsieder (unfortunately not indexed for inflation). My Salzsieder relatives in Germany still receive a very modest annual pension!

In ancient times, the salt springs (referred in early documents as the wallow spring) was likely a muddy puddle trickling salt water along the bank of the Kocher. The prevent spring rains flooding the town, medieval workers channelized the Kocher with 10 foot tall stone walls. This left the salt spring 10 feet below grade allowing the dilution of the saline by rain runoff (what they called Wildwasser). Typical salt concentration was 5%; the process became uneconomical below 3%.

St Michaels, the main church in Hall started their church books (recording Baptisms & Marriages) about 1560. Unlike many German Lutheran churches, St Michaels did not remove religious iconography and burial memorials during the transition from Catholic to Lutheran in the 1520s.