01-09-2017, 04:32 PM
Google says about 100m-ish. Overlays show the southern side is the same as the short side of both Castle Dykes and Castle Yard. the East and West sides may extend further north beyond the hedge line but I've seen nowt on the photos or on site to confirm that.
Magic give a south side of this feature as 130m, same as North side of Castle Dykes and West side of Castle Yard
Magic give a south side of this feature as 130m, same as North side of Castle Dykes and West side of Castle Yard