Road block help-

I live on a mountain top. When i founded this deed there was a winding road up to the flat spot above with a small 3x3 building blocking the road, nearby roads were destroyed to block access to this mountain top hideaway with a glorious clay pit. The deed had been disbanded for some time. Some player, previous to my arrival, decided to block the road up to the clay pit with a 3x3 building and then destroy parts of the older road. The player hasn't logged on for quite some time but sadly their masonry skill produced 77QL walls. I've tried messaging the player on the forums without any answer. about a month has gone by so far and I'm looking at a long wait time due to high QL. Essentially i was wondering if there was any help to be had against the devious claypit/road blocking individual's efforts? 

---- under my control public access will be maintained to said  glorious mountaintop clay pit.