There are a handful of famous rock balancers around the world who seem to be supernaturally in tune with their medium. One such artist, Michael Grab, says that he balances his stone sculptures by feeling for the tiniest of indentations on the rocks that can interact with and counterbalance each other. An annual Rock Stacking World Championship is held in Llano, Texas, where competitors can focus on categories such as height and arches.
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