British police are searching for the vandal, or vandals, who painted a Covid-19 face mask on the figure of a mysterious giant carved into a hillside in southern England.
The Long Man of Wilmington, a 235ft-high chalk outline holding a white stick in each hand, is protected by law as an ancient monument.
Its exact origins are disputed but many archaeologists date it to the Anglo-Saxon or medieval periods.
"Whilst this damage may have been perpetrated for humour or some other reason, the actions that have been taken are unacceptable," said Tom Carter, a sergeant with Sussex Police.
"The Long Man of Wilmington is protected by law as a Scheduled Ancient Monument for its historical significance."