The natural boundaries of the Central Fells in the east are St John’s Vale, Thirlmere and Dunmail Raise. In the west they are Derwentwater, Borrowdale, Langstrath and Stake Pass, twisting east through Great Langdale to Ambleside. The best known mountains in this area are the Langdale Pikes but there are many more attractive fells of modest height. High Raise is the highest summit and north of this there is a change in the terrain, related to a change in the underlying rocks from Borrowdale Volcanics to Skiddaw Slates. The ground becomes more grassy and level so that after rain it is often boggy.
In the notes at the end of Book 3, AW deplores the changes that constantly take place and makes guidebooks out-of-date, suggesting that the books will ‘progressively be withdrawn from publication after a currency of a few years.’ As we all know, this did not happen. In fact, some of his unique diagrams are still invaluable, and example of this being Eagle Crag 4 which shows the route of ascent in a way which cannot be done on a conventional map.