Explorer Map 239 Lake Vyrnwy and Llanfyllin

With its exceptional level of detail and clarity, the Explorer series of OS Maps is a favourite of walkers, climbers, mountain bikers, outdoor professionals and anyone else who needs to know exactly where they are! The 1:25,000 scale allows plenty of detail, and the squares of the National Grid allow every bit of Great Britain to be given its own unique reference number.Masses of features are displayed, including areas of interest, picnic spots, campsites and National Trails, along with National Park and Rights of Way information for England and Wales.