English history was my major....I think this is tragic. I hope they do arrest and fine whomever did this.
OK, how hard would it be to re-construct that section of this historic earthwork? Another day or so with modern tools? Maybe this is a good thing so at least people now know about the silly dike and its history. Maybe make it a true historic site and put up a museum to honor Good King Offa (one of the better Saxon Kings by the way).