Landranger map 161 shows Abergavenny & The Black Mountains. The Black Mountains Range is physically separated from the rest of the Brecon Beacons by the River Wye. The Offa's Dyke path & Sugar Loaf Mountain attracts many walkers & adrenaline seekers to the iconic Welsh region. You can also visit the picturesque town of Abergavenny which is only 20 miles from the English border. With this map you will receive a code for use on your i OS or Android smartphone or tablet. Find our more at Mobile Download FAQ. The OS Landranger map for The Black Mountains is available in both the standard paper version & weatherproof " Active" version.