The most severe blizzard we had experienced in the Weddell Sea swept down upon the Endurance on the evening of the 13th, and by breakfast-time on the following morning the kennels to the windward, or southern side of the ship were buried under 5 ft. of drift. I gave orders that no man should venture beyond the kennels. The ship was invisible at a distance of fifty yards, and it was impossible to preserve one’s sense of direction in the raging wind and suffocating drift. To walk against the gale was out of the question. Face and eyes became snowed up within two minutes, and serious frost-bites would have been the penalty of perseverance. The dogs stayed in their kennels for the most part, the “old stagers” putting out a paw occasionally in order to keep open a breathing-hole. By evening the gale had attained a force of 60 or 70 miles an hour, and the ship was trembling under the attack. But we were snug enough in our quarters aboard until the morning of the 14th, when all hands turned out to shovel the snow from deck and kennels. The wind was still keen and searching, with a temperature of something like —30° Fahr., and it was necessary for us to be on guard against frost-bite. At least 100 tons of snow were piled against the bows and port side, where the weight of the drift had forced the floe downward. The lead ahead had opened out during the night, cracked the pack from north to south and frozen over again, adding 300 yds. to the distance between the ship and “Khyber Pass.” The breakdown gang had completed its work by lunch-time. The gale was then decreasing and the three-days-old moon showed as a red crescent on the northern horizon. The temperature during the blizzard had ranged from —21° to —33.5° Fahr. It is usual for the temperature to rise during a blizzard, and the failure to produce any Föhn effect of this nature suggested an absence of high land for at least 200 miles to the south and south-west. The weather did not clear until the 16th. We saw then that the appearance of the surrounding pack had been altered completely by the blizzard. The “island” floe containing the Endurance still stood fast, but cracks and masses of ice thrown up by pressure could be seen in all directions. An area of open water was visible on the horizon to the north, with a water indication in the northern sky.

The ice-pressure, which was indicated by distant rumblings and the appearance of formidable ridges, was increasingly a cause of anxiety. The areas of disturbance were gradually approaching the ship. During July 21 we could bear the grinding and crashing of the working floes to the south-west and west and could see cracks opening, working, and closing ahead.

“The ice is rafting up to a height of 10 or 15 ft. in places, the opposing floes are moving against one another at the rate of about 200 yds. per hour. The noise resembles the roar of heavy, distant surf. Standing on the stirring ice one can imagine it is disturbed by the breathing and tossing of a mighty giant below.”

Early on the afternoon of the 22nd a 2-ft. crack, running south-west and north-east for a distance of about two miles, approached to within 35 yds. of the port quarter. I had all the sledges brought aboard and set a special watch in case it became necessary to get the dogs off the floe in a hurry. This crack was the result of heavy pressure 300 yds. away on the port bow, where huge blocks of ice were piled up in wild and threatening confusion. The pressure at that point was enormous. Blocks weighing many tons were raised 15 ft. above the level of the floe. I arranged to divide the night watches with Worsley and Wild, and none of us had much rest. The ship was shaken by heavy bumps, and we were on the alert to see that no dogs had fallen into cracks. The morning light showed that our island had been reduced considerably during the night. Our long months of rest and safety seemed to be at an end, and a period of stress had begun.

During the following day I had a store of sledging provisions, oil, matches, and other essentials placed on the upper deck handy to the starboard quarter boat, so as to be in readiness for a sudden emergency. The ice was grinding and working steadily to the southward, and in the evening some large cracks appeared on the port quarter, while a crack alongside opened out to 15 yds. The blizzard seemed to have set the ice in strong movement towards the north, and the south-westerly and west-south-westerly winds that prevailed two days out of three maintained the drift. I hoped that this would continue unchecked, since our chance of getting clear of the pack early in the spring appeared to depend upon our making a good northing. Soundings at this time gave depths of from 186 to 190 fathoms, with a glacial mud bottom. No land was in sight. The light was improving. A great deal of ice-pressure was heard and observed in all directions during the 25th, much of it close to the port quarter of the ship. On the starboard bow huge blocks of ice, weighing many tons and 5 ft. in thickness, were pushed up on the old floe to a height of 15 to 20 ft. The floe that held the Endurance was swung to and fro by the pressure during the day, but came back to the old bearing before midnight.

“The ice for miles around is much looser. There are numerous cracks and short leads to the north-east and south-east. Ridges are being forced up in all directions, and there is a water-sky to the south-east. It would be a relief to be able to make some effort on our own behalf; but we can do nothing until the ice releases our ship. If the floes continue to loosen, we may break out within the next few weeks and resume the fight. In the meantime the pressure continues, and it is hard to foresee the outcome. Just before noon to-day (July 26) the top of the sun appeared by refraction for one minute, seventy-nine days after our last sunset. A few minutes earlier a small patch of the sun had been thrown up on one of the black streaks above the horizon. All hands are cheered by the indication that the end of the winter darkness is near. . . . Clark finds that with returning daylight the diatoms are again appearing. His nets and line are stained a pale yellow, and much of the newly formed ice has also a faint brown or yellow tinge. The diatoms cannot multiply without light, and the ice formed since February can be distinguished in the pressure-ridges by its clear blue colour. The older masses of ice are of a dark earthy brown, dull yellow, or reddish brown.”

The break-up of our floe came suddenly on Sunday, August 1, just one year after the Endurance left the South-West India Docks on the voyage to the Far South. The position was lat. 72° 26´ S., long. 48° 10´ W. The morning brought a moderate south-westerly gale with heavy snow, and at 8 a.m., after some warning movements of the ice, the floe cracked 40 yds. off the starboard bow. Two hours later the floe began to break up all round us under pressure and the ship listed over 10 degrees to starboard. I had the dogs and sledges brought aboard at once and the gangway hoisted. The animals behaved well. They came aboard eagerly as though realizing their danger, and were placed in their quarters on deck without a single fight occurring. The pressure was cracking the floe rapidly, rafting it close to the slip and forcing masses of ice beneath the keel. Presently the Endurance listed heavily to port against the gale, and at the same time was forced ahead, astern, and sideways several times by the grinding floes. She received one or two hard nips, but resisted them without as much as a creak. It looked at one stage as if the ship was to be made the plaything of successive floes, and I was relieved when she came to a standstill with a large piece of our old “dock” under the starboard bilge. I had the boats cleared away ready for lowering, got up some additional stores, and set a double watch. All hands were warned to stand by, get what sleep they could, and have their warmest clothing at hand. Around us lay the ruins of “Dog Town” amid the debris of pressure-ridges. Some of the little dwellings had been crushed flat beneath blocks of ice; others had been swallowed and pulverized when the ice opened beneath them and closed again. It was a sad sight, but my chief concern just then was the safety of the rudder, which was being attacked viciously by the ice. We managed to pole away a large lump that had become jammed between the rudder and the stern-post, but I could see that damage had been done, though a close examination was not possible that day.

After the ship had come to a standstill in her new position very heavy pressure was set up. Some of the trenails were started and beams buckled slightly under the terrific stresses. But the Endurance had been built to withstand the attacks of the ice, and she lifted bravely as the floes drove beneath her. The effects of the pressure around us were awe-inspiring. Mighty blocks of ice, gripped between meeting floes, rose slowly till they jumped like cherry-stones squeezed between thumb and finger. The pressure of millions of tons of moving ice was crushing and smashing inexorably. If the ship was once gripped firmly her fate would be sealed.

The gale from the south-west blew all night and moderated during the afternoon of the 2nd to a stiff breeze. The pressure had almost ceased. Apparently the gale had driven the southern pack down upon us, causing congestion in our area; the pressure had stopped when the whole of the pack got into motion. The gale had given us some northing, but it had dealt the Endurance what might prove to be a severe blow. The rudder had been driven hard over to starboard and the blade partially torn away from the rudder-head. Heavy masses of ice were still jammed against the stern, and it was impossible to ascertain the extent of the damage at that time. I felt that it would be impossible in any case to effect repairs in the moving pack. The ship lay steady all night, and the sole sign of continuing pressure was an occasional slight rumbling shock. We rigged shelters and kennels for the dogs inboard.

The weather on August 3 was overcast and misty. We had nine hours of twilight, with good light at noon. There was no land in sight for ten miles from the mast-head. The pack as far as the eye could reach was in a condition of chaos, much rafted and consolidated, with very large pressure-ridges in all directions. At 9 p.m. a rough altitude of Canopus gave the latitude as 71° 55´ 17´´ S. The drift, therefore, had been about 37 miles to the north in three days. Four of the poorest dogs were shot this day. They were suffering severely from worms, and we could not afford to keep sick dogs under the changed conditions. The sun showed through the clouds on the northern horizon for an hour on the 4th. There was no open water to be seen from aloft in any direction. We saw from the masthead to west-south-west an appearance of barrier, land, or a very long iceberg, about 20 odd miles away, but the horizon clouded over before we could determine its nature. We tried twice to make a sounding that day, but failed on each occasion. The Kelvin machine gave no bottom at the full length of the line, 370 fathoms. After much labour we made a hole in the ice near the stern-post large enough for the Lucas machine with a 32-lb. lead; but this appeared to be too light. The machine stopped at 452 fathoms, leaving us in doubt as to whether bottom had been reached. Then in heaving up we lost the lead, the thin wire cutting its way into the ice and snapping. All hands and the carpenter were busy this day making and placing kennels on the upper deck, and by nightfall all the dogs were comfortably housed, ready for any weather. The sun showed through the clouds above the northern horizon for nearly an hour.

The remaining days of August were comparatively uneventful. The ice around the ship froze firm again and little movement occurred in our neighbourhood. The training of the dogs, including the puppies, proceeded actively, and provided exercise as well as occupation. The drift to the north-west continued steadily. We had bad luck with soundings, the weather interfering at times and the gear breaking on several occasions, but a big increase in the depth showed that we had passed over the edge of the Weddell Sea plateau. A sounding of about 1700 fathoms on August 10 agreed fairly well with Filchner’s 1924 fathoms, 130 miles east of our then position. An observation at noon of the 8th had given us lat. 71° 23´ S., long. 49° 13´ W. Minus temperatures prevailed still, but the daylight was increasing. We captured a few emperor penguins which were making their way to the south-west. Ten penguins taken on the 19th were all in poor condition, and their stomachs contained nothing but stones and a few cuttle-fish beaks. A sounding on the 17th gave 1676 fathoms, 10 miles west of the charted position of Morell Land. No land could be seen from the mast-head, and I decided that Morell Land must be added to the long list of Antarctic islands and continental coasts that on close investigation have resolved themselves into icebergs. On clear days we could get an extended view in all directions from the mast-head, and the line of the pack was broken only by familiar bergs. About one hundred bergs were in view on a fine day, and they seemed practically the same as when they started their drift with us nearly seven months earlier. The scientists wished to inspect some of the neighbouring bergs at close quarters, but sledge travelling outside the well-trodden area immediately around the ship proved difficult and occasionally dangerous. On August 20, for example, Worsley, Hurley, and Greenstreet started off for the Rampart Berg and got on to a lead of young ice that undulated perilously beneath their feet. A quick turn saved them.

A wonderful mirage of the Fata Morgana type was visible on August 20. The day was clear and bright, with a blue sky overhead and some rime aloft.

“The distant pack is thrown up into towering barrier-like cliffs, which are reflected in blue lakes and lanes of water at their base. Great white and golden cities of Oriental appearance at close intervals along these clifftops indicate distant bergs, some not previously known to us. Floating above these are wavering violet and creamy lines of still more remote bergs and pack. The lines rise and fall, tremble, dissipate, and reappear in an endless transformation scene. The southern pack and bergs, catching the sun’s rays, are golden, but to the north the ice-masses are purple. Here the bergs assume changing forms, first a castle, then a balloon just clear of the horizon, that changes swiftly into an immense mushroom, a mosque, or a cathedral. The principal characteristic is the vertical lengthening of the object, a small pressure-ridge being given the appearance of a line of battlements or towering cliffs. The mirage is produced by refraction and is intensified by the columns of comparatively warm air rising from several cracks and leads that have opened eight to twenty miles away north and south.”

We noticed this day that a considerable change had taken place in our position relative to the Rampart Berg. It appeared that a big lead had opened and that there had been some differential movement of the pack. The opening movement might presage renewed pressure. A few hours later the dog teams, returning from exercise, crossed a narrow crack that had appeared ahead of the ship. This crack opened quickly to 60 ft. and would have given us trouble if the dogs had been left on the wrong side. It closed on the 25th and pressure followed in its neighbourhood.

On August 24 we were two miles north of the latitude of Morell’s farthest south, and over 10° of longitude, or more than 200 miles, west of his position. From the mast-head no land could be seen within twenty miles, and no land of over 500 ft. altitude could have escaped observation on our side of long. 52° W. A sounding of 1900 fathoms on August 25 was further evidence of the non-existence of New South Greenland. There was some movement of the ice near the ship during the concluding days of the month. All hands were called out in the night of August 26, sounds of pressure having been followed by the cracking of the ice alongside the ship, but the trouble did not develop immediately. Late on the night of the 31st the ice began to work ahead of the ship and along the port side. Creaking and groaning of timbers, accompanied by loud snapping sounds fore and aft, told their story of strain. The pressure continued during the following day, beams and deck planks occasionally buckling to the strain. The ponderous floes were grinding against each other under the influence of wind and current, and our ship seemed to occupy for the time being an undesirable position near the centre of the disturbance; but she resisted staunchly and showed no sign of water in the bilges, although she had not been pumped out for six months. The pack extended to the horizon in every direction. I calculated that we were 250 miles from the nearest known land to the westward, and more than 500 miles from the nearest outpost of civilization, Wilhelmina Bay. I hoped we would not have to undertake a march across the moving ice-fields. The Endurance we knew to be stout and true; but no ship ever built by man could live if taken fairly in the grip of the floes and prevented from rising to the surface of the grinding ice. These were anxious days. In the early morning of September 2 the ship jumped and shook to the accompaniment of cracks and groans, and some of the men who had been in the berths hurried on deck. The pressure eased a little later in the day, when the ice on the port side broke away from the ship to just abaft the main rigging. The Endurance was still held aft and at the rudder, and a large mass of ice could be seen adhering to the port bow, rising to within three feet of the surface. I wondered if this ice had got its grip by piercing the sheathing.