A survey of great interest to naturalists and to the thousands of ramblers who visit the Peak District.Lying as it does at the heart of industrial England, this area of intimate wooded dales, steep-sided gorges and windswept boggy moorland, is perhaps the most welcome of all Britain's National Parks; certainly, it is the most accessible, for within 75 miles of its border lives nearly half the population of England, and the rich variety of its scenery attracts tens of thousands of visitors...