The longer a climber gratifies his instincts and pursues his sport, the larger becomes his store of reminiscences and the greater his experience. If he confines his attention to a single range of mountains such as the Alps, he is almost always in sight of mountains he has climbed and glaciers he has traversed. Each view shows him some route he has once pursued, some glacier basin he has explored, some pass he has crossed. The labyrinth of valleys and the crests of successive ridges do not puzzle him. He knows how they are grouped and whither they lead. Beyond those mountains is the Zermatt valley; that peak looks down on Zinal; that col leads to Saas. Thus there grows in him the sense of the general shape and arrangement of the country. It is no longer a tangled chaos of heights and depths, but an ordered anatomy, formed by the action of definite and continuous forces. So far as his knowledge extends this orderliness is realised. He has developed a geographical sense. That in its turn poses problems for solution. He notes some corner of his map where a deep-lying valley is intricately fitted in amongst ridges which he has seen from without. He becomes desirous to visit it, so that he may complete the map in his own understanding.
When he goes to a new district he cannot but be eager to obtain a geographical grasp of its form and arrangement. The instinct that desires to see round corners and over walls has now new food to grow on. In a fresh district the geographical problem is always fascinating, but in one that has been explored by no mountaineer before, its fascination is overwhelming, especially if the explorer be a surveyor and cartographer, as I can attest. To see the sketch-map of a previously unsurveyed country grow upon the paper is an intense satisfaction. The aspect of every peak gives rise to a twofold problem. Can it be climbed, and if so by what route? How should it be depicted on the map? These questions are ever present. The solution of them is the thought of every hour, the first point of interest in every view. As it is with the explorer, so to a less extent is it liable to be with every climber; for all climbers are to some extent explorers, even though they are but exploring previously described and mapped territory. It is new to them, at any rate, and that is the important fact. Climbers, when they begin to exhaust a district, move to another in hunger after the unknown.