A padlocked gate has been forced open at a popular walking spot which was closed at the weekend after a number of dog owners flouted the rules.
Dunston Field, at Caistor Roman Town, was closed from Sunday (January 15) to allow sheep a safe space to graze.
The space, south of Norwich, is privately owned by the Norfolk Archaeological Trust which said visitors not keeping their dogs on leads or picking up their dog's mess were behind its decision to close the 22-acre field.
But just days after the field was closed, a padlocked gate was forced open and signs ripped down.
Natalie Butler, director of Norfolk Archaeological Trust, said: "The signage being ripped down is frustrating.
"These were just A4 laminated signs near the car park but it all takes time and money to re-do and fix.
"The lack of respect is so disappointing."
It comes as the trust is also investigating reports that a puppy was attacked at the site.
A sign put up by a member of the public, dated January 11, claimed that four or five white and brown Spaniel-type dogs were seen off their leads and one attacked a puppy while the owners “were far away in the distance”.
The sign stated: “Our puppy could now be affected all of her life because of the careless attitude of these owners”.
Any with information about this incident is asked to contact info@norfarchtrust.org.uk.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here