For economic reasons, when it comes to erecting buildings, man often exploits the underground resources of a region. In the Touraine that is shining white hard limestone and slate, but also clay and soft chalky limestone. A multitude of lime, tile and brick kilns peppered the landscape in the Middle Ages and these persist either as ruins or in place names.
The opening in the top of a brick lined bottle shaped lime kiln near Le Grand Pressigny.
The oldest kilns date from the 14th century, but production reached a peak in the 19th century and declined in the 20th. There are 579 such industrial kilns surviving in Indre et Loire, in 160 municipalities.
The 'eye' at the base of the kiln, through which the lime was extracted.
The tiles they manufactured were used on roofs and on floors at all levels. Lime was used in construction directly or as render, then extensively for making cements and as a soil improver.
The walking group take a break at the base of the kiln. I'm standing on top to take the photo.
Three lime kilns and at least nine tile kilns are known from around Le Grand Pressigny, and at least a dozen tile kilns and a brick kiln around Preuilly sur Claise.
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