Where there is no room for a descending or an ascending zigzag, it is better not to attempt to make steps for the side-length of the foot, but to descend or ascend face inward, cutting with one hand a perpendicular ladder of ‘pigeon-holes,’ or steps shaped like small church apses, to be used both by the boot-toes and the hands. For men on claws a vertical ladder of nicks, for the fingers and the two front points of the claw, is all that is needed.
In cutting zigzags for men without claws, besides making allowance for the different size and length of step and interval needed for the inside and outside feet, the turning-step at the corner has to be made of different size and shape. It should always be larger in size and semicircular at the back, so that the climber can pivot round in it on his toe, without hitch, until he faces the other way. It is well to provide a good hand-nick or an obvious hold for the pick, conveniently placed above the turning-step.
Steps upon hard, overhanging ice, or upon ice near the perpendicular, are practically impossible to make or use with any real security. The chief difficulty is to make any sound hold for the hands, such as may keep the body in balance above the feet. It is also generally impracticable upon perpendicular or overhanging ice to cut away sufficient ice in the slope at the back of the step to allow the leg to stand erect above the foot, especially if the tread is slanted downward and inward at a safe inclination. When tours de force of this character are performed, it is usually upon ice which has frozen in ‘waterfall’ fashion, coat over coat, so that it becomes possible to cut through one coat and get a downward handhold between the strata of ice. Such holds, of course, cannot be reckoned upon as dependable for more than a balance lift with the hand. Claws will help us for such nice feats; but they are best only attempted on practice glaciers, or where the rest of the party is soundly anchored.
On high exposed ridges we have often to deal, in traversing across the faces of towers, with a mixed coating of snow and ice, in reality a snow cake in process of transformation into ice by infiltration. The snow has to be cleared away, and enough ice hacked from the rock to leave us on the lower sill of the gap, so formed, a sufficiently firm and broad ice edge for a step. This is fine engraving for a leader: if he cuts too roughly, the whole plate may flake off and leave him smooth, vertical rock to traverse; and if he stops too soon, the flake below may similarly peel away when his weight comes on the step formed by its upper edge.
On glacier ice, any rib, crack or flaw in the ice will naturally suggest itself as the groundwork of, if not the substitute for, an ice step. A stone on the ice, or the pocket which it leaves when cleared away, makes generally an adequate toehold,—certainly a hold for the point of a claw.
In cutting across ice flakes, or along narrow bridges through séracs, if the bridge is solid enough it is best to make side-foot nicks along one side of the crest. If it is not solid enough and the steps have to be made along the actual edge of crest, it is well to remember that the fit, and especially the exact length of the step, are very important. The boot sole slips about on the top of a flat ice surface, and a step on a narrow crest which is made too short or too long for the boot renders the balance precarious. If claws are worn, the steps will be unnecessary, and the party will use the side or truncated crest of the bridge according to its solidarity and their own convenience.
On glaciers, the flaking ice that we meet with on the faces of big séracs demands great nicety of touch. The steps are difficult to make, as it is difficult to check the fracture at the right point. They are difficult to use, because our weight may continue the work, and the whole flake surface below our feet may come away. Claws are of real service, as they grip without starting a line of downward fracture. If we are without them, a deep pick hold must be secured, driven through into a deeper stratum of ice, to protect the precarious foothold on the flake surface or edge. Large flakes that boom or sound hollow to the axe are best left alone.
On ‘crusted’ snow, snow that has melted and refrozen to an icy surface, which is often too hard to permit of footholds being kicked, steps are best made by a dragging stroke with one corner of the adze-blade along the face of the snow. Any attempt to swing or to cut with the pick will result in the point sticking at every stroke, and thus in very slow progress. On very hard, sticky surfaces, where the pick sticks monotonously and does not split the snow-ice, and where the drag stroke of the adze-blade will not penetrate, the corner of the adze should be struck lightly in, and the axe shaft levered sharply in the direction away from the step-maker. This will burst out a small cube of ice behind the blade. Two such blows and jerks are generally enough to clear a sufficiently long step for a boot. On softer, sticky surfaces a single well-aimed jerking blow of this sort, made by a single motion of the one hand, followed by a sharp, driving kick with the boot, usually forms steps rapidly enough to allow of the maintenance of a slow walking rhythm. Of course, to a party on claws, such surfaces, which cannot lie at very steep angles, present a pleasant ballroom or billiard-table vista of indulgent promenade.
Using Steps.
We learn to use steps before we are, usually, allowed to make them. But we cannot use them until they are made. Hence the order I have followed here.