Friedrichstollen (Baden-Baden)
The Friedrichstollen is a tunnel to the thermal springs in Baden-Baden .
The total length of the Friedrichstollen with all side tunnels is around 160 meters. It is mostly bricked with natural sandstone and clinker and leads to the headwaters in the Florentinerberg . In the Florentinerberg, the thermal water is drawn from various sources from a depth of around 2000 meters. These are:
- Friedrichsquelle 184.5 m above sea level NN , 67.5 ° C
- Hell spring 185.5 m above sea level NN , 67.2 ° C
- New tunnel source 184.8 m above sea level NN , 66.8 ° C
- Jew and brew spring 64.0 ° C
history
2000 years ago, the Romans already had a bathing establishment at this point, which they called Aquae (later Aquae Aureliae). This name then passed from Badin to today's Baden-Baden . The Grand Ducal Senior Building Councilor Robert Gerwig had the Friedrichstollen built in the years 1868–1871. He is with 182- 185 m above sea level. NN about 30 meters above the Oostal .
The artesian water outlet is directed to the medicinal baths and drinking cures via an open collecting channel with a discharge of 4.156 l / s (800,000 liters / day) . Here drinking options exist in the Caracalla Spa , the heron fountain in the Sofienstraße or at the pump room next to the Kurhaus .
The thermal water emerging from crevices in the arcs and conglomerates of the Oberkarbon is a sodium chloride thermal bath.
Individual evidence
Coordinates: 48 ° 45 ′ 48.6 ″ N , 8 ° 14 ′ 32.1 ″ E