A store is trying to prove it rocks by joining in with a social media craze.

Tesco Callington has left five specially decorated rocks in and around Callington for members of the public to find and receive a prize on their return to the store.

After finding out a member of the public had ’rocked’ their store; a pastime where people paint rocks, leave them for other people to find and share photographs of them on social media, the Callington store’s community 

champion Carrie-ann Bailey wanted to get involved.  

People who find one of the rocks are asked to take a photograph, share it on the Tesco Callington Facebook page and take it to the customer service desk to receive a prize.