The OS Explorer map of Brecon Beacons, Western Area is a must-have when visiting the Western Area of the National Park. Whether you're interests are summiting Pen-y-Fan — the highest peak in South Wales, exploring local villages such as the quaint Sennybridge, or just stargazing in the National Park — Explorer OL12 has got you covered. Brecon beacons is an International Dark Sky Reserve, on clear nights you can see the Milky Way, Major constellations, as well as bright nebulas & meteor showers. Our OS Explorer maps are perfect for day-tripping, extensive hikes, & cycling. They come in both standard & Weatherproof Active, so you'll never get caught out in a storm. Publication Date: 05/01/2017