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Bad Kreuznach Salinental graduation walls inhalation therapy and extract salt

Bad Kreuznach, near were we used to live in Germany, is famous for their Salinental graduation walls. These were used for inhalation therapy, as the salty air is felt to be good for one's health. When we were there, we did feel that the air was wonderfully refreshed and pleasant. For hundreds of years, salty water was pumped from 500 meters below the ground at that location. The excess water was evaporated in the open air by slowly dripping down these walls. When the brine was concentrated enough. It was then boiled to produce salt crystals. In the video, we show the salty water running down the walls, the mechanism for pumping the water from the ground, the water wheel powering it, and what seems to be a tank for boiling the brine into salt crystals. Everything is quite old: it is basically Steampunk technology!