Wobble or rocking stones (English rocking stones) are mostly phenomena caused by deposits or weathering in boulders that balance easily movable on their base. They are formed preferentially from granitic outcrop rock as a later phenomenon of wool sack weathering, less often from horizontally banked sedimentary rocks.
First of all, the weathering processes widen the primarily created fracture systems in the rock until the rock complex disintegrates into individual blocks over time, which are then gradually eroded - more and more fragmented. In rare cases, larger individual blocks are preserved in an exposed "wobbly" position. A type of shape similar to the rocking stone is the mushroom rock.
The astonishing mobility of the balanced, often huge masses led in many places to the creation of myths and legends in which such stones play an essential role, for example as oracles or "toys" of giants.
Another genus are rocking stones created by human activities. In Ganløse Eged, a 167 hectare forest on the Danish island of Zealand, the stone of a Langdysse (dolmen) has been turned into a rocking stone.
May 26, 2018
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