Its impressive circumference reaches 16.20 m. A legend explains why part of the boulder is split off: “Devil stole the stone from the Castle of Thunderer, but the Thunderer caught the thief and split the stone with a lightning bolt”. Another story tells that “once upon a time the huge stone was carried by a grey-haired old man in his cart. While on the way, a harsh thunderstorm scared the old man, who dropped the stone on the ground”. The inscription on the boulder was engraved during the First World War.
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