At this place we established our principal depot and left provisions for thirty days. On our four sleds we took provisions with us for sixty days. And now we began the ascent to the plateau. The first part of the way led us over snow-covered mountain slopes, which at times were quite steep, but not so much so as to prevent any of us from hauling up his own sled. Farther up, we found several glaciers which were not very broad but were very steep. Indeed, they were so steep that we had to harness twenty dogs in front of each sled. Later the glaciers became more frequent, and they lay on slopes so steep that it was very hard to ascend them on our skis. On the first night we camped at a spot which lay 2,100 feet above sea level. On the second day we continued to climb up the mountains, mainly over several small glaciers. Our next camp for the night was at an altitude of 4,100 feet above the sea. On the third day we made the disagreeable discovery that we should have to descend 2,100 feet, as between us and the higher mountains to the south lay a great glacier which crossed our path from east to west. This could not be helped. The expedition therefore descended with the greatest possible speed and in an incredibly short time we were down on the glacier, which was named Axel Heiberg Glacier. Our camp of this night lay at about 3,100 feet above sea level. On the following day the longest ascent began; we were forced to follow Axel Heiberg Glacier. At several places ice blocks were heaped up so that its surface was hummocky and cleft by crevasses. We had therefore to make detours to avoid the wide crevasses which, below, expanded into large basins. These latter, to be sure, were filled with snow; the glacier had evidently long ago ceased to move. The greatest care was necessary in our advance, for we had no inkling as to how thick or how thin the cover of snow might be. Our camp for this night was pitched in an extremely picturesque situation at an elevation of about 5,250 feet above sea level. The glacier was here hemmed in by two mountains which were named "Fridtjof Nansen" and "Don Pedro Christophersen," both 16,000 feet high.