NPRNTeitlMath O SaflePerthynasNPRN270450TeitlAnti-Tank Block, Nant Ffrancon Anti-Invasion DefencesMath O Saflen/aPerthynasConsists ofNPRN418763TeitlRhaeadr Ogwen: Sheepfold/Second World War Battery House or PillboxMath O Saflen/aPerthynasConsists ofNPRN419780TeitlMortar Emplacement, Nant Ffrancon Anti-Invasion DefencesMath O Saflen/aPerthynasConsists ofNPRN270449TeitlSpigot Mortar Emplacement, Nant Ffrancon Anti-Invasion DefencesMath O Saflen/aPerthynasConsists ofNPRN419778TeitlMortar Emplacement, Nant Ffrancon Anti-Invasion DefencesMath O Saflen/aPerthynasConsists ofNPRN270349TeitlSpigot Mortar Emplacement, Nant Ffrancon Anti-Invasion DefencesMath O Saflen/aPerthynasConsists ofNPRN270451TeitlSpigot Mortar Emplacement, Nant Ffrancon Anti-Invasion DefencesMath O Saflen/aPerthynasConsists of
