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was already under way from the 16th century. The
Jonsdorf Mühlsteinbrüche were one of more than 40 quarrying sites in the surrounding region. In 1560, quarrying began in Jonsdorf itself. Over 350 years, sandstone was quarried here and made into millstones with a diameter of up to 2.70 metres. To do
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this, the millstones were initially hewn out of one piece of rock. From about 1850, millstones were assembled from several pieces as there were no longer any sufficiently large and homogeneous sandstone blocks being quarried. Production was maintained until 1918. The main markets were in
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and, based on its formation, belongs to the
Bohemian Cretaceous Basin. It is characterised by several special features. For example, the sandstone, which was formed by sedimentation, has been breached multiple times by
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was laid out by friends of nature and local history. From 1990, a restoration of the quarries was begun in order to make them accessible. In 2002, a demonstration workshop was built in the
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of the rock (a melting of mineral grains at their grain boundaries). The sandstone retains its porosity, is hardened by the strength of its
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The area of Mühlsteinbrüche has as additional geological feature: its pronounced columnar sandstone. Its best known rock formation is the
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212:("Black Hole"). Today the Mühlsteinbrüche are a major attraction in the Zittau Mountains.
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160:("Great and Little Organ"), whose appearance is easily confused with that of columnar
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The sandstone in the Mühlsteinbrüche region was formed in the geological age of the
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are a region of bizarre rock formations, which have been formed by the quarrying of
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at a height of 480 to 560 metres. To the southwest they are adjoined by the
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Geologische
Exkursionen in der Oberlausitz und im Elbsandsteingebirge
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Humboldtfelsen ("Humboldt Rock"), a 7-metre-high basalt shaft in the
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The use of sandstone in the Zittau
Mountains for the production of
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sent an artist and two geologists here to study this phenomenon.
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runs through the region which has an area of about 35 hectares.
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Die südöstliche
Oberlausitz mit Zittau und dem Zittauer Gebirge
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349:. Meyers Lexikonverlag Mannheim/Leipzig/Vienna/Zurich;
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Mühlsteinbrüche webpage by the
Jonsdorf Mountain Club
336:. Oberlausitzer Verlag Spitzkunnersdorf, 2006;
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137:and hydrothermal fluids), which has led to
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407:50.84581844611°N 14.69488978389°E
34:("Millstone Quarries") south of
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347:Meyers Naturführer Oberlausitz
58:processes. They are a popular
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152:Schwarzes Loch ("Black Hole")
74:Location and surrounding area
260:("Great and Little Organs")
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369:Werte der deutschen Heimat
436:Rock formations of Saxony
364:Akademie-Verlag Berlin
258:Große und Kleine Orgel
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170:Alexander von Humboldt
158:Große und Kleine Orgel
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84:Jonsdorfer Felsenstadt
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16:Old smithy in Jonsdorf
373:Vol. 16). p. 207–208.
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446:Quarries in Germany
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451:Görlitz (district)
319:Steinbruchschmiede
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127:Tertiary volcanism
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398:14°41′41.603222″E
395:50°50′44.946406″N
233:Rock formations:
68:educational trail
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441:Zittau Mountains
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362:. Edition no. 2
273:("Black Quarry")
204:In the 1950s, a
199:Saint Petersburg
105:("Three Tables")
40:Zittau Mountains
26:("Little Organ")
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309:Kellerbergbruch
271:Schwarzer Bruch
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143:grain structure
111:Middle Turonian
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32:Mühlsteinbrüche
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88:Czech Republic
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54:and also by
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24:Kleine Orgel
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237:Drei Tische
103:Drei Tische
425:Categories
327:Literature
243:Mausefalle
226:Mausefalle
182:millstones
168:. In 1852
123:intrusions
120:phonolitic
56:weathering
52:millstones
282:("Slide")
48:sandstone
266:("Lion")
116:basaltic
80:Jonsdorf
36:Jonsdorf
291:Bärloch
280:Rutsche
249:Nashorn
191:England
176:History
94:Geology
38:in the
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216:Sights
195:Moscow
187:Russia
162:basalt
60:hiking
44:Saxony
166:magma
135:magma
66:. An
351:ISBN
338:ISBN
264:Löwe
224:The
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62:and
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30:The
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