Suspected souvenir hunters broke into Stonehenge and vandalised the ancient monument, English Heritage has said.
A hammer and screwdriver were used to take a small chip the size of a 10p piece from the side of the Heel Stone.
English Heritage said further damage was prevented by security guards who spotted the two men at the 5,000-year-old site in Wiltshire.
Good for the guard for catching them quickly.