The “Trovants” are stones or sandstone concretions that secrete cement and appear to grow by themselves. They consist of a stone core with an outer shell of sand believed to be the result of cementation that occurred millions of years ago.
After heavy rain small forms appear on the rocks leading them to be dubbed “growing stones” by locals. Examples of trovants can be seen at the Trovant Museum (Muzeul Trovantilor) in Costesti, in the Valcea region of Romania.
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