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- HOTMIX! Nybrent Hyllestadkalk leskes og testes som restaureringsmørtel på Stavanger domkirke
- Was Nidaros Cathedral built from stone extracted in a large underground Medieval quarry?
- New open-access book: Soapstone in the North. Quarries, Products and People. 7000 BC – AD 1700
- “Nidaros: The Portland Cement Cathedral” (Baker Memorial Lecture)
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Tag Archives: underground quarry
Ancient underground building stone quarries are rather common. They are known since at least the Old Kingdom in Egypt, some 6 500 years ago, when fine limestone was quarried underground close to Cairo (Tura) in order to provide casing stones to the Giza pyramids. But underground quarries are, interestingly, quite rare in the European Middle Ages. Apparently, there was no need to start difficult, large-scale underground operations to build churches, monasteries and cathedrals until the Late Middle Ages, when, for example, the underground limestone quarries in Paris and Caen in France started to become developed toward the gigantic network of tunnels and galleries we know today. Thus, it is remarkable that a huge underground quarry may have been opened around AD 1200 in Trondheim, Norway, in order to provide soapstone for Nidaros Cathedral, the northernmost of Europe’s great medieval cathedrals. Why? Continue reading →