I started the tunnel about midway down the food tunnel, directly opposite the recess in which the radio engine sat. It was to be from thirty to thirty-five feet long, about six feet high, and four feet wide. I proposed to carry it two or three feet below the surface, and, at the far end, to hole out a little shaft which would come within a foot of the surface. This thin shell could then be punctured whenever the other exit was blocked off. However, a foot a day, I decided, would be all I could do. «Even a foot means hard work,» my diary observes, «because I can use only my left arm. I saw the blocks out, then carry them to the hatch, where I hoist them to the surface, load them aboard a small man-hauling sledge, and haul them some distance to leeward.»
Unless you know something about the character of Antarctic snow, the reference to sawing it out in blocks may be puzzling. Except that it has been fused by cold, rather than heat, the Barrier snow is like a kind of sandstone. It is hard and brittle. You can't make snowballs with it. When you rub it, tiny icelike globules shred off. The color is the whitest white you ever saw; it has none of the smoothness and transparency of ice. After cold has coalesced the crystals of newly fallen snow, you can walk over it and not leave an impress. At times skis will slide helplessly as on slick glacier ice. You can't shovel that kind of snow. A shovel rings when it strikes as it might against rock. I used a two-foot hand saw. With this I cut out blocks, which could be pried clear with a shovel, leaving nice straight lines and debris easy to handle.
As a matter of fact, the escape tunnel was no wasted effort against a distant contingency. It became my water supply. All I had to do was to saw the blocks to a size suitable for the water bucket, and stack them in the veranda like cordwood. Yet, melting snow was an unmitigated nuisance; I loathed it. Two gallons of snow wielded barely two quarts of water after several hours on the stove. The water bucket was almost never off the stove; and, while it was there, little room was available for anything else. I came to hate its soot-blackened, dented sides; its greedy, ever-gaping maw; and once, when it careened to the floor and spilled all the water accumulated for supper, I cheerfully booted the bucket across the shack. Stooping to retrieve it, I caught my reflection in the shaving mirror. I was actually grinning.
April 6
I am sleeping fairly well, which is a blessing. But I still can't seem to wake up when I want to — missed by three quarters of an hour this morning — which is a nuisance. I don't know why I've lost the faculty; I'll have to regain it somehow. When the long night comes, I shall have no light to awaken me. I'm keeping the skylights cleared of snow to enjoy what little daylight remains. But all three are frosted over most of the time. When the temperature at the ceiling passes freezing, the frost melts; and the drip-drip-drip makes little ice stalagmites on the floor, which is always cold. I've proved, with a thermometer, that when I'm sitting down the temperature at the level of my feet is anywhere from 10 degrees to 30 degrees colder than at my head. .
April 7
The six months' day is slowly dying, and the darkness is descending very gently. Even at midday the sun is only several times its diameter above the horizon. It is cold and dull. At its brightest it scarcely gives light enough to throw a shadow. A funeral gloom hangs in the twilight sky. This is the period between life and death. This is the way the world will look to the last man when it dies.
April 8
Were it not for my lame shoulder and the difficulties caused by the weather instruments (which were designed for a warmer place), I should be making much better progress in preparing myself for the oncoming darkness. Unpredictable things, small but often annoying, make continuous demands upon my time. For example, I find that even when there is no drift, the three-and-one-half inch outlet ventilator fills every three or four days with ice (or rather with what looks like neve, which is between snow and ice). It's due, I think, to condensation. Anyhow, I've got to watch that. Good ventilation I must have at any cost. The pipe being held in place by friction, I just pull it out of the hole, carry it below, and lay it on the stove to thaw. The icy stuff won't pound out. It has to be melted.
Just to complicate matters, the same trouble is developing in the topside end of the stovepipe. Around dinner time (or whenever the stove is running hot) the ice melts, and the water runs through a hole in the elbow. Luckily, the register, which stands directly underneath, has a glass top; otherwise it would have been out of commission long ago. I have tied a can under the elbow to catch the water. Nevertheless, I'm rather worried about the blockage in the pipe; unless the fumes from the stove escape to the surface. I shall have trouble. .