Stonehenge staff on high alert for rock robbers inspired by Louvre heist

English Heritage has provided emergency training to help staff ‘stay alert to suspicious behaviour’ (Picture: Elena Di Vincenzo/Archivio Elena Di Vincenzo/Mondadori Portfolio via Getty Images)It would surely take a superhuman gang of villains to have the strength to steal a 30-tonne Stonehenge stone from rural Somerset.But nevertheless, volunteers have reportedly been put on high alert after French crown jewels worth £76million were stolen from the Louvre in Paris last month.E