It has been suggested, as a partial solution, that the two men should not rope at the ends of the rope, but keep some feet of loose end wound round the body. Then if one falls in he can, with luck helping him, release this slack and make a foot or thigh noose on which the body can rest while suspended, thus relieving the constriction of the chest. Anything that may help is worth trying, and I should certainly advise the method as giving a small extra chance in a bad situation. But this only deals with one of many difficulties.
Experience has again and again shown me that the man below becomes incapable of active co-operation, from cold and shock if not from constriction, before the men above, however prompt and expert they may be, can arrange and carry out any effective scheme of rescue. I have known of difficult situations where even two men above proved insufficient for the complex task of retaining firm fixed anchors, clearing obstructions and pulling up. In any case no mechanical device can be equivalent to the power of a third man, and two men can never be as safe as three.
Once this is conceded, we may admit that a number of good mountaineers will probably continue to hold the view that two is the best number for many sorts of climbing; and that therefore parties of two, starting out with the best intentions, will occasionally find themselves compelled by the necessity of avoiding even greater risk to hazard the crossing of snow-covered crevasses or bridges of dubious stability. They should certainly then put on a doubled or a second rope. One of the two rope-lengths when tied should be longer than the other. This runs risks of twisting and is a nuisance, but in case of a fall it secures that the ropes are at once distinguishable, and it should be prearranged that the man who has fallen should always do his pulling upon this looser rope. The second man should have the end of the looser rope attached, not to his waist, but to his axe shaft. Whenever the leader crosses an obvious bridge or pauses to probe, the second man should plant the axe, with the loose rope attached, at once in the snow, and hold the other, tighter rope in his two hands, ready for emergencies. It is clear that on this method some practical use is made of the protection of the second rope. If the leader goes through, the second man avoids all the enormous difficulty of untying one of two taut ropes, of fixing it to his axe, and then anchoring it, with the whole weight of the man below dragging on him. The weight is on the one taut rope round his waist; he has only to drive in the axe with its slack rope already attached, and the fixed anchor is ready for the man below to start pulling upon, while he himself at once has his hands free to pull on the taut rope. Again, if the rear man falls in—which of course he has even less excuse for doing—this method has the advantage of keeping the second rope already loose and distinguishable in his hand, to cling to or climb upon, and also of saving his axe for him. This double advantage is some remedy for the fact that the leader, who in this case will be the man left above, will have both ropes still fixed to his waist, as on the old faulty system. I do not suggest that the leader also should have the second rope attached to his axe. He must have his axe quite free.
It might be well also to adopt the plan of the few feet of loose end wound round the waist, to make a foot noose with, if the circumstances and position allow.
When the double rope is worn, the rear man should always carry the spare rope. If the double ropes are then, as is quite possible, twisted and jammed in the snow groove, he has yet a third chance of making free and quick connection with his leader; and unless, as I have said, both men can begin instantly to use their full strength upon distinct ropes, there is small chance that one man can get another out of an undercut crevasse.
In place of tying the looser rope to their axe, some men prefer to compromise, and make a fixed loop in the second rope near their waist, through which, in case of the fall of a man in front, they can thrust the axe into the snow, and so get a provisional anchor. This loop in the rope close to the hand, to snatch at or thrust the axe through in emergency, is also used by men in larger parties when linked by the usual single rope. The method has many objections; and all the material security it gives is quite as usefully and less objectionably obtained from the coil or so of slack we are accustomed to grip in the hand.
In the case of a larger party, if a leader or last man does fall in, the first care should be to drive an axe, or axes, securely into the snow, and loop the rope. One man must then approach the edge of the crevasse and see the run of the rope, the nature of the pull, and the clearance of overhanging snow, if any, which has to be made. If the crevasse has the character of a bergschrund, with one lip higher than the other, it is often easier to pull the man out from the opposite side to that from which he has fallen. One, or, if the numbers allow, two of the party must work round cautiously to the far side, taking a spare rope to let down. A noose should be made at the end of the rope before it is lowered. The stirrup for the foot can also well be employed in such emergencies. In a party of three, on a suspicious glacier, the spare rope should always be carried by the last man, and not by the first man, as is usually done in guided parties.
With the two ropes pulling from different sides the extrication is fairly easy. If the farther lip cannot be reached, or overhangs as much as or more than the near lip, there is nothing for it but to cut back the lip of snow overhang above the suspended man until the rope is cleared. This runs some risk of injuring the man below with the falling masses; but the chance must be taken on occasion. The longer a man hangs, the more helpless he becomes. Promptitude is essential.
Keen sight is the first quality for a good leader on snow-covered ice; to be able to remark not only every change of shade or colour or angle on the surface immediately ahead, but also to be able to read the surface well to right and left for its betrayal of crevasses that may be continuing, better hidden, across his path. He must also know all about glacier structure and the inclinations and aspect of surfaces where hidden crevasses may be expected. Tinted glasses are, for many men, an interruption to the reading of ice or snow, and often the cause of bad leading. The man is fortunate who is able to do without them when he is leading, or who finds enough protection in the clear spectacles which best suit his sight. There is an exaggerated idea of the chances of breaking ordinary clear spectacles which has little foundation. They can be worn safely on almost all rock and ice; and even on very severe rock, where they run some risk of smashing as the head is raised past a ledge, they are as safe on the nose as in a pocket. Except right up under the arm-pit, and not always there, there is no contrivable pocket which can be sure of avoiding contact with rock in some attitude of climbing.
After our eyes—and our experience—we have still another criterion, that of the hand. The probing with the axe point at every step must become perfectly automatic, and begin of itself to function as soon as sight or instinct makes us suspicious about the glacier surface. We must have the right sort of axe point, one without a large protuberant collar to the spike, so that we can probe with nicety of touch; and we must get to know exactly the feel of our axe and the meaning of the different resistances which its point signals to our hand. For this reason it is well always to use the same axe or kind of axe.