Offa's Dyke: Damage reports near Chirk are investigated
16 August 2013 Last updated at 20:25 BST
An investigation is under way amid reports a large section of Offa's Dyke ancient earthwork has been damaged near Wrexham.
North Wales Police say they have been made aware of possible damage to the protected ancient monument near Chirk.
The Welsh government's historic environment service, Cadw, is also investigating.
The Offa's Dyke Association said it understood the damage was caused on private land.
Local councillor Terry Evans said he had "never seen destruction like this on an ancient monument".