The Upper Glacier Depots

The depot ledger for 20 December 1911 records a position at 85° 7’ S, 163° 8’ E, elevation 8, 280 feet. The entry is written in Bowers’s compact hand, the letters pressed hard into the paper as if to fix the coordinates against the ice that had tried to shift beneath their feet. A single sledge load remained there: oil, man food, extra foot gear. The arithmetic of survival, reduced to a line of figures. Wilson’s sledging journal for the same date carries a different precision. Evans had been slow on the slope that day, his breathing laboured, the surface soft beneath their boots. They had covered 5.5 miles. Two documents from one day. One announces a triumph of navigation and supply. The other records a body beginning to fail.

Ten days earlier, on 10 December 1911, the last pony had been driven to its knees and killed. The men had stood at the base of the glacier with harnesses and traces in their hands, the tools of animal transport suddenly obsolete. Now they possessed only their own strength, their own lungs, their own hearts pumping blood through tissue that would not regenerate as fast as the work consumed it. The narrative of their journey had already begun to split between what the official record would call success and what the private journals tracked as cost.

Between those two dates—between the slaughter and the placement of the Upper Glacier Depot—the Beardmore Glacier had begun its work on them. The glacier is a river of ice moving imperceptibly south from the polar plateau, eighty miles of ascent from the Barrier to the névé where the ice begins to flatten toward the pole. Shackleton had found its mouth in 1908 and named it for his sponsor. Scott’s party approached it knowing the route existed but not knowing what the ice would demand of bodies that had already hauled loads across four hundred miles of snow.

The ascent began in earnest on 18 December. Scott’s diary for that morning notes the start with characteristic compression: off at 8 A.M. With heavy loads. The heavy loads were the consequence of decisions made months before and miles behind. The motor sledges had failed on the Barrier, their tracks breaking through soft snow until the machines were abandoned. The ponies had failed on the glacier’s lower reaches, their hearts giving out under weights they could not pull through drifts they could not penetrate. What remained was a transport method Scott had always anticipated for the final stage: man-hauling, the practice of harnessing men to sledges and having them drag weights across ice and snow.

The practice was not new to polar exploration. Scott judged it the most reliable method for the most difficult terrain. It was also the most expensive in calories, the most destructive to human tissue, and the least forgiving of miscalculation.

Bowers’s meteorological and sledging records for 18 December track the opening movement of what would become a two-week struggle. The surface is noted as good going for the first miles, then soft névé as the incline steepened. The party made 9.5 miles that day, a distance that would prove exceptional. The temperature was -15°F. The wind was from the southeast. These facts appear in Bowers’s columns without comment, as if weather and mileage could be separated from the effort required to achieve them. Scott’s diary supplies the connection. The work was very tiring. The sledge came badly on that surface. The sledge carried 200 pounds per man. There were twelve men in the party at this point, divided into three units of four. Each unit dragged between 700 and 800 pounds across ice that yielded and refroze in irregular patterns, catching runners and requiring the haulers to jerk the load free with each step.

The Beardmore Glacier presents a surface that changes as the climber ascends. At its foot, where the ice spreads onto the Barrier, the surface is broken and pressure-ridged, the ice compressed and fractured by its own movement. Higher up, the glacier narrows between mountains that rise on either side, and the surface becomes a maze of crevasses—cracks in the ice that can be inches wide and hundreds of feet deep, or hidden entirely beneath snow bridges that collapse under weight. Still higher, the crevasses give way to icefalls, sections where the glacier’s gradient steepens and the ice breaks into chaotic blocks that must be climbed or circumvented. The party would encounter all three conditions in the days between 18 and 31 December.

Wilson’s journal for 19 December records the first depot placement. Lower Glacier Depot: 84° 33’ S. The coordinates are precise. The cost is noted in the same entry. Evans was strong but sweating heavily. Edgar Evans was thirty-four years old, a petty officer in the Royal Navy, the largest man in the party and the one on whom Scott had relied for physical labor since the expedition’s organization. Evans had driven a motor sledge on the Barrier until the machine failed. He had handled ponies until the ponies died. Now he was hauling, and his body was beginning to show what hauling would take. The phrasing of Wilson’s note—strong but—captures a moment of observation before diagnosis. Evans was still performing. He was also displaying symptoms that would accumulate.

The Lower Glacier Depot was the first of three planned supply caches. The strategy was sound in principle. By leaving food and fuel at measured intervals on the ascent, the party would lighten their loads for the final push to the plateau while ensuring that returning parties would find provisions waiting at regular stages of their descent. The depots were insurance against the unexpected: storm, injury, delay. Each depot also committed the party to a specific line of retreat. Once placed, a depot could not be moved. The route up became the route down, fixed in ice and latitude.

Between the Lower and Middle Glacier depots, the terrain worsened. Bowers’s record for 21 December: surface very soft, crevassed, 4.5 miles. The mileage had halved. The temperature had dropped to -22°F. Scott’s diary for the same day introduces a note that would recur. They were getting sadly hungry. The ration for man-hauling was 4, 500 calories per day, composed of pemmican, biscuit, butter, cocoa, tea, and sugar, calculated by the expedition’s physicians to sustain heavy labor in cold conditions. The calculation assumed efficient travel across predictable surfaces. It did not account for the additional exertion of hauling through soft snow, of breaking trail through crevassed terrain, of the cold itself increasing metabolic demand. The men were burning more than the rations provided. They were also, as Scott’s note suggests, aware of the deficit.

The Middle Glacier Depot was established on 23 December at 84° 56’ S. Bowers’s ledger entry: three weeks’ food, five units of oil, spare ski, boots. Wilson’s journal: Evans slower, complains of fingers. Frostbite was the constant companion of polar travel, the tissue damage caused by freezing that could progress from numbness to permanent loss without the victim noticing the transition. Evans’s fingers were warning him, and Wilson was noting the warning. The party had now been man-hauling for six days. They had gained twenty-three miles of latitude and several thousand feet of elevation. They had also, though the depot ledger does not record this, begun to consume their own reserves of body fat and muscle tissue that the rations did not replace.

Christmas Eve brought a storm that pinned the party in camp for twenty-four hours. Scott’s diary: blowing hard all day, temperature -20°, cannot proceed. The enforced rest was welcome in some respects. It allowed the men to dry clothing that had frozen with sweat and condensation, to repair sledge harnesses that had begun to fray, to eat the full ration without the immediate expenditure of hauling. But the storm also consumed time that the schedule did not have. Scott had calculated the polar journey to reach the pole by mid-January, allowing margin for the return before the onset of winter darkness. Each day of delay compressed that margin.

The storm cleared on Christmas Day. The party moved, but the surface had transformed. Fresh snow covered the crevasses, making them harder to detect and more dangerous to cross. Bowers’s record: many crevasses, surface heavy, 5 miles. Wilson’s journal adds a detail. Evans fell twice, winded. The falls were significant. A man hauling a sledge moves in a harness that distributes weight across shoulders and hips. A fall breaks that rhythm, requires recovery from an awkward position, and consumes energy disproportionate to the event. Evans’s windedness suggested that his recovery capacity was diminishing, that the margin between effort and exhaustion was narrowing.

Between Christmas and the placement of the Upper Glacier Depot, the party entered the most difficult section of the ascent. The icefall that marks the glacier’s final climb to the plateau required the sledges to be lowered by rope down crevasses and hauled up the opposite side, or unloaded and carried in pieces across broken ice. Scott’s diary for 28 December records terrible work in the icefall, the sledge capsized twice, Evans done up. The phrasing is significant. Done up was Scott’s euphemism for physical collapse, the point where a man could not continue without rest that the schedule did not permit. Yet the party did continue, and Evans with them, because the depots required placement and the plateau required reaching.

The Upper Glacier Depot was established in the evening of 31 December 1911, at the point where the glacier’s surface finally began to level toward the polar plateau. The coordinates marked the highest depot of the outward journey. The supplies left there were calculated for the return: food and fuel for the descent, cached against the possibility that the party would reach the pole depleted and need emergency rations for the journey down. The calculation assumed that the party would be returning with the same number of men, in similar physical condition, at a predictable rate of travel. It did not account for what had already happened to Evans, or for what might happen to others in the weeks ahead.

Wilson’s journal for 31 December records the depot placement with characteristic precision. Upper Glacier Depot complete, surface improving, Evans very slow but cheerful. The contrast between the two observations—very slow and cheerful—captures something essential about the expedition’s method of managing physical decline. Evans was masking his condition, or Wilson was recording the mask, or both. The cheerful demeanor was functional. It allowed the party to continue without confronting the implications of Evans’s slowing pace. It also meant that the true state of his reserves was not entering the official record in terms that would force a decision.

Scott’s diary for the same date is more direct. They were on the summit at last, he wrote. The height was 9, 500 feet. The wind was blowing hard and the temperature -20°. They had had a terribly hard time getting up the glacier, and the work had told on all of them. Evans was feeling the strain, but he hoped the man would pull round when they got better going on the plateau. The hope was not unreasonable in itself.

The plateau surface was expected to be harder and more regular than the glacier, allowing faster travel with less effort. What Scott’s hope did not address was the cumulative nature of the strain Evans had already absorbed. The body does not reset to baseline after exertion. It carries the debt forward, paying interest in reduced capacity until the principal is somehow recovered. Evans had no recovery period available. The march to the pole was about to begin.

The Beardmore ascent had taken fourteen days. In that time, the party had established three depots containing sufficient supplies to sustain a return journey, had mapped a route through crevassed and broken ice, and had gained the elevation necessary to access the polar plateau. The depot ledgers and sledging journals record these as concrete achievements: coordinates, contents, dates, miles, temperatures, surface conditions. Together they constitute a documentary record of success.

But the same documents record the cost. Bowers’s meteorological columns, read against his mileage figures, show a steady decline in daily progress as the ascent steepened. Wilson’s physical observations, scattered through his scientific notes, track Evans’s decline from strong to slow to very slow to done up. Scott’s diary entries, increasingly focused on the condition of his party, reveal a commander aware of strain but committed to his objective. The documents do not agree on how to weight these factors. The depot ledger treats the Upper Glacier Depot as a completed task. Wilson’s journal treats it as a stage in a physical process. Scott’s diary treats it as a threshold, with hope for improvement beyond.

A fragility cascade had begun. Each difficult depot placement consumed time and energy that compressed the margins of subsequent marches. The glacier had taken more than the plan allowed.

The party that ascended onto the Polar Plateau on 1 January 1912 was not the same party that had begun the glacier ascent two weeks before. They were lighter by the weight of the three depot loads, but heavier by the accumulated fatigue of fourteen days’ heavy labor at altitude. They were fewer by the three supporting parties that had turned back at successive stages of the ascent, leaving five men to continue south. They were diminished by the visible decline of their strongest physical member, whose condition had been noted in private journals but not addressed in official decisions. They were committed to a line of retreat that ran through three fixed points—the Upper, Middle, and Lower Glacier depots—each necessary for survival but none sufficient to guarantee it.

The plateau stretched southward, featureless and wind-scoured, toward a pole that another expedition might already have reached. The depots behind them held their insurance against return. The calories they had burned on the glacier were gone, converted to heat and work and not replaced. The time they had spent was gone, compressed from the margin that would have allowed for delay. The strength that Evans had lost was gone, and with it some fraction of the party’s collective capacity to absorb shock.

They moved forward because the objective required it, because the depots were placed and the route was fixed, because turning back would have meant acknowledging that the cost already paid might exceed the value of the goal. They moved forward onto a surface that would not demand what the glacier had demanded, but would demand instead a different kind of endurance: the psychological endurance of monotony, of distance without feature, of days that repeated themselves until the body forgot that other landscapes existed.

The deflated party would begin their return journey in nineteen days, covering 862 miles back to Cape Evans. Scott would write on that day of his fear that the return journey would be dreadfully tiring and monotonous. The fear was precise. The dread would be earned.