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Map
Detailed Information
Openning hours
  • Monday Open 24 hours
  • Tuesday Open 24 hours
  • Wednesday Open 24 hours
  • Thursday Open 24 hours
  • Friday Open 24 hours
  • Saturday Open 24 hours
  • Sunday Open 24 hours
Photos
Bludný balvan
Bludný balvan
Bludný balvan
Bludný balvan
Reviews
Jarek Quatro (12/20/2019)
The second largest erratic boulder with absolutely the longest axis in the Czech Republic. It was lifted in 1928 from a stream bed in places called "In the Mines" in Poruba. Poruba's vicious boulder consists of a granite rock, which is described as a coarse-grained porphyry granite. The rock color is pink with striking black spots of dark minerals. The rock structure is porphyry, with 1 - 2 cm large rosettes of pink potassium feldspars. Plagioclase, gray, yellowish crushed quartz and black biotite in elongated clusters are also found in the basic coarse-grained matter. Magnetite, apatite, titanite, sparsely epidote are also present.
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