The aim in this series of books is to provide the mountainbiker and walker with information on an intended route so they know something of what to expect. One of the problems is that O.S. maps give no indication as to whether an 'other road' is metalled, a path or a forest fire break, or anything in between. Many bridges shown on O.S. maps do not exist. Rivers are difficult to judge in size from the map, and a building may be anything from a pile of stones to a maintained bothy. All is revealed without removing the sense of adventure and exploration. Gradient profiles help to assess how strenuous a route is, and each hand-drawn page contains a wealth of information. The object is to save wasted leisure time and enable the armchair explorer to plan ahead or relive experiences. The Angus Glens include: the glens of western Angus: Isla, Clova, Doll, including the Backwater Reservoir; the eastern glens: Lee, Esk, and the Drumtochty, Fetteresso and Durris forests; and the Deeside glens: Callater, Gelder, Girnock, Muick, Tanar etc.