Brecon Beacons OS Map

Black Mountains (centered on Waun Fach)

Use zoom controls to switch between 1:25,000 (explorer) and 1:50,000 (landranger) mapping.

Click here to check magnetic variation (declination) using the British Geological Survey Grid Magnetic Angle Calculator.

Please note, these maps are provided to assist with route planning only. Always carry the relevant paper OS map together with a compass when navigating the fells and mountains.