Huppertsbracken Lime Kiln

<< The lime kiln from Huppertsbracken >>
"... In the Düsseltal, not far from the Winkelsmühle, there is an old lime kiln on the hiking trail that leads past the Düssel in the direction of Gruiten. At first glance, you think you can see a half-decayed industrial monument. That is intentional. Because at this point There was once a lime kiln, which was probably built long before 1633. It was in operation for several centuries, fell into disrepair when it was no longer needed in the 1930s, and for many years had almost disappeared in the slope under the earth and leaves - and was in parts very lovingly rebuilt in parts from 1984 to 1986. Strictly speaking, the lime kiln has been standing here on the Düssel for at least 370 years (if you generously count the 50 "invisible" years). ... "
historisches-dorf-gruiten.de/10_Kalkabbau_2/Der_Kalkofen_Huppersbracken.htm

The year of construction of the lime kiln is not known. The first documentary mention comes from the year 1671. In 1985 it was reconstructed

First mentioned in a document in 1672, in good condition until the 1920s. Behind the lime kiln is the - now wooded - quarry from which the limestone was extracted.
In the lime kiln, carbon dioxide is expelled from limestone at a temperature of 900ºC to 1200ºC, and so quick lime is produced. When water is added, slaked lime is produced. You need this to lime walls and also to bind mortar. In the air, the lime hardens again by absorbing carbon dioxide - the original state as limestone is restored.