The Central Fells of Lakeland include the ever-popular Langdale Pikes, the supremely lovely foothills overlooking Borrowdale and the ''silent forests and gaunt crags'' above the dark waters of Thirlmere. The Pictorial Guides by A. Wainwright, written half a century ago, have been treasured by generations of walkers. This edition of The Central Fells is freshly reproduced from Wainwright''s original hand-drawn pages.