Lüneburg: Alter Gipsofen am Kalkberg/Sülzwiesen

The Kalkberg should actually be called Gipsberg. Kalkberg provided the city with building materials for 800 years and can be found in all the old buildings. He's a problem, because he has the fatal property to soften when wet. If a whole house presses on it, it comes to bulges and broken brick. Such a bulge is to marvel at the "pregnant house" in the Waagestrasse.The gypsum stove was built in 1819, renovated in 1990 by the ALA. Today operated by the BUND and should be open from 9-12 o'clock. If you meet someone. The two goats belong to this building and are also used for landscape maintenance.The screed roof consists of self-supporting, curved rafters and is a rarity in Lower Saxony. Inside there is an exhibition about the Kalkberg.Not many know this cultural monument, the official address is: Beim Kalkberg 7. It is also accessible by bike via this branch road.Source: Lüneburger Insights, Chamäleon Verlag, Lüneburg 2012

That's with the opening hours is such a thing. Orally I was told: From 10 - 12 clock, except Wednesday. You can also inquire by phone, that's why I've scanned the flyer and placed it as a picture. There is the contact address with everything on it. If it does not work, worth the Kalkberg in any case

This old gypsum kiln from 1819 with the half-timbered house in front of it stands right at the foot of the Kalkberg. The outer walls measure 10 X 10 meters and consist of 1.5 m thick anhydrite rubble from the shield stone. The roof structure made of round rafters was named after its inventor, de Lormsche's plank truss roof. This construction was able to bridge a span of 10 meters without support.The principle of the furnace worked like a kiln in the open air: layered material is annealed through. The furnace was filled with 5 layers of wood and 5 layers of stone up to the top of the dome (6.70). Gypsum stone, oak wood, beech wood and birch wood were piled up alternately in exactly the right thickness according to a given basic pattern. In the lowest layer, west / east running draft pipes provided the necessary oxygen supply. They were not allowed to become clogged during the fire and had to be covered with large plaster stones. A solid circle was placed in the middle of the layering. The so-called "pipe hole" ran from the floor to the central chimney. It enclosed the ignition tube, which was filled with thin ones. The pilot then ate its way down into the layers of wood from above. A fire lasted 4 days, the oven stood for 10 days to cool down.
The actual furnace was removed in 1877 and the floor of the building was raised about 2m. The plaster furnace stood empty for a long time. In 1990 the ALA carried out a comprehensive excavation and restoration. Since then it has been the only industrial monument of this type in Germany, used by BUND for small exhibitions or projects in the context of nature conservation.lustauflueneburg.de/gipsofen/#gsc.tab=0