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Glacial erratics and quarry stones

Erratic boulders offered by RÖHRIG granit® are extracted out of the overlaying material of the core rock. The so-called "wool sacks" arise due to the decomposition of hard rock masses below the soil surface as a result of physical and chemical processes.

 erratics and quarry stones
granite grey up to 50cm on average
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granite grey  approx. 50-80cm on average
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granite grey approx. 80-100cm on average
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granite grey over 100cm on average
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