Gießmann Water Tunnel and Frog King
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The tunnel is named after Ernst Louis Gießmann, the former owner of the Badhotel, who had the tunnel driven through the syenite rock between 1876 and 1878 to ensure the irrigation of his property.The water extraction should probably be operated via a fountain gallery along the "Black Pond" and through the constantly flowing rock water from the mountain.
The water that still flows out of the mountain today is discharged unused into the sewage system.
The tunnel is 368 meters long, almost 2 meters high and 1.2 meters wide.translated by
•April 9, 2023
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