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Distances and heights are quoted throughout in kilometres and metres. These details are taken directly from the map, where possible, but in attempting to measure the actual distance of each walk it has been necessary to make an estimation, for with countless zigzags on many of the routes, it’s impossible to be precise.

Times quoted for each route are approximations only. They refer to actual walking time and make no allowances for rest stops or interruptions for photography – such stops can add considerably (25 per cent or more) to the overall time you’re out during the day, so bear this in mind when planning your day’s activity. Although such times are given as an aid to planning they are, of course, subjective, and each walker will have his or her own pace which may or may not coincide with that quoted. By comparing your times with those given here, you should soon gain an idea of the difference and be able to compensate accordingly.

In route descriptions ‘left’ and ‘right’ apply to the direction of travel, whether in ascent, descent or traverse. However, when used with reference to the banks of glaciers or streams, ‘left’ and ‘right’ indicate the direction of flow, ie: looking downwards. Where doubts might occur, a compass direction is also given.