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The maps recommended for the walks in this book are Ordnance Survey 1:25,000 Explorer maps OL1 (The Peak District: Dark Peak area); OL2 (Yorkshire Dales: Southern and Western areas); OL19 (Howgill Fells and Upper Eden Valley); OL21 (South Pennines); OL30 (Yorkshire Dales: Northern and Central areas); OL31 (North Pennines: Teesdale and Weardale); OL297 (Lower Wharfedale and Washburn valley)

GPS systems

There is an increasing number of satellite-linked GPS systems on the market these days, some of which contain the mapping needed for specific counties or long-distance trails. The precision of these GPS systems significantly reduces the risk of navigational error, and they are very reliable guides in poor visibility. However, they are no substitute for the ability to read conventional mapping or for sound navigational skills, but for some years the author has been confidently using a Satmap Active 10, with appropriate 1:25,000 mapping on SD cards. Satmap Systems also produce mapping specifically for the Pennine Way, which covers many of the walks in this book, particularly where they cross county boundaries.

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