it was settled in the 13th century. the main branches of industry were porcelain-making, forestry, and the production of charcoal. rafts were built to get the wood into the larger cities, along the main river, and the rhine. first, the people setlted on the plateau. they cut down some forest, and settled in the clearing that was created that way. a well preserved example of such a setltlement is wilhelmsthal. only at a later date did people settle in the valleys.