Apologies for being an hour late yesterday on GM/SS-161. The access from the English side is through Kielder Forest, 250sq miles of tall green trees. The route I chose included 9.5km on the mountain bike up an old toll road. 2km in I took a wrong turn and after 2km on a diminishing track was faced with a wall of trees. Identifying the error and back tracking took up 1 1/4 hrs.
Must try harder