the ruined walls of the 12th century harbottle castle in coquetdale, northumberland, england, uk

12th century abandoned ancient archaeological architectural architecture barbican bastion border revers borders building bygone castle chateau chacent teau coquetdale decayed defence defences disrepair fort fortification fortress garrison gatehouse hall harbottle heritage historic historical history listed manor medieval northumberland raider raiders ramparts reivers ruin scotland scottish strong hold stronghold tower turret walls warfare