Brecon Beacons National Park / Parc Cenedlaethol Bannau Brycheiniog - Eastern Area / Ardal Ddwyreiniol

OS Explorer is the Ordnance Survey's most detailed map and is recommended for anyone enjoying outdoor activities such as walking, horse riding and off-road cycling. The series provides complete GB coverage and can now be used in all weathers thanks to OS Explorer - Active, a tough, versatile version of OS Explorer.