Sheet OL12
OS Explorer Map - Active maps are tough, durable and weatherproof. The map is covered in a protective plastic coating that can be written on, so your favourite routes can be easily highlighted. It is also lightweight, compact and perfect for wet weather conditions. Active maps contain the same information as the standard OS Explorer map.

Highlights include: The Beacons Reservoir, Brecon, Fan Faw, The Black Mountains, Brecon Canal, Merthyr Tydfil, River Towy, and Trecastle.
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