 The road running from Carlisle to Maryport had turf-and-timber forts along it at Old Carlisle (Red Dial), Caer Mote, and Papcastle (which may have had special responsibility for looking after the largely untouched Lake District region).The forts in the east along the Eden and Lune valley road at Old Penrith, Brougham and Low Borrow Bridge may have been enlarged, but the evidence is scanty.A fort at Troutbeck may have been established from the period of Trajan (emperor 98 AD – 117 AD) onwards, along with an uncertain road running between Old Penrith and/or Brougham, through Troutbeck (and possibly an undiscovered fort in the Keswick area) to Papcastle and Maryport.