The Camp on the Summit of Coropuna Elevation, 21,703 Feet
One of the Frequent Rests in the Ascent of Coropuna
The truncated summit is an oval-shaped snow Page 43field, almost flat, having an area of nearly half an acre, about 100 feet north and south and 175 feet east and west. If it once were, as we suppose, a volcanic crater, the pit had long since been filled up with snow and ice. There were no rocks to be seen on the rim—only the hard crust of the glistening white surface. The view from the top was desolate in the extreme. We were in the midst of a great volcanic desert dotted with isolated peaks covered with snow and occasional glaciers. Not an atom of green was to be seen anywhere. Apparently we stood on top of a dead world. Mountain climbers in the Andes have frequently spoken of seeing condors at great altitudes. We saw none. Northwest, twenty miles away across the Pampa Colorada, a reddish desert, rose snow-capped Solimana. In the other direction we looked along the range of Coropuna itself; several of the lesser peaks being only a few hundred feet below our elevation. Far to the southwest we imagined we could see the faint blue of the Pacific Ocean, but it was very dim.
My father was an ardent mountain climber, glorying not only in the difficulties of the ascent, but particularly in the satisfaction coming from the magnificent view to be obtained at the top. His zeal had led him once, in winter, to ascend the highest peak in the Pacific, Mauna Kea on Hawaii. He taught me as a boy to be fond of climbing the mountains of Oahu and Maui and to be appreciative of the views which could be obtained by such expenditure of effort. Yet now I could not take the least interest or pleasure in the view from the top of Coropuna, Page 44nor could my companions. No sense of satisfaction in having attained a difficult objective cheered us up. We all felt greatly depressed and said little, although Gamarra asked for his bonus and regarded the gold coins with grim complacency.
After we had rested awhile we began to take observations. Unslinging the aneroid which I had been carrying, I found to my surprise and dismay that the needle showed a height of only 21,525 feet above sea level. Tucker's aneroid read more than a thousand feet higher, 22,550 feet, but even this fell short of Raimondi's estimate of 22,775 feet, and considerably below Bandelier's “23,000 feet.” This was a keen disappointment, for we had hoped that the aneroids would at least show a margin over the altitude of Mt. Aconcagua, 22,763 feet. This discovery served to dampen our spirits still further. We took what comfort we could from the fact that the aneroids, which had checked each other perfectly up to 17,000 feet, were now so obviously untrustworthy. We could only hope that both might prove to be inaccurate, as actually happened, and that both might now be reading too low. Anyhow, the north peak did look lower than we were. To satisfy any doubts on this subject, Tucker took the wooden box in which we had brought the hypsometer, laid it on the snow, leveled it up carefully with the Stanley pocket level, and took a squint over it toward the north peak. He smiled and said nothing. So each of us in turn lay down in the snow and took a squint. It was all right. We were at least 250 feet higher than that aggravating peak.
Page 45We were also 450 feet higher than the east peak of Coropuna, and a thousand feet higher than any other mountain in sight. At any rate, we should not have to call upon our fast-ebbing strength for any more hard climbs in the immediate future. After arriving at this satisfactory conclusion we pitched the little Mummery tent, set up the tripod for the mercurial barometer, arranged the boiling point thermometer with its apparatus, and with the aid of kodaks and notebooks proceeded to take as many observations as possible in the next four hours. At two o'clock we read the mercurial, knowing that at the same hour readings were being made by Watkins at the Base Camp and by the Harvard astronomers in the Observatory at Arequipa. The barometer was suspended from a tripod set up in the shade of the tent. The mercury, which at sea level often stands at 31 inches, now stood at 13.838 inches. The temperature of the thermometer on the barometer was exactly +32° F. At the same time, inside the tent we got the water to boiling and took a reading with the hypsometer. Water boils at sea level at a temperature of 212° F. Here it boiled at 174° F. After taking the reading we greedily drank the water which had been heated for the hypsometer. We were thirsty enough to have drunk five times as much. We were not hungry, and made no use of our provisions except a few raisins, some sugar, and chocolate.
After completing our observations, we fastened the little tent as securely as possible, banking the snow around it, and left it on top, first having placed Page 46in it one of the Appalachian Mountain Club's brass record cylinders, in which we had sealed the Yale flag, a contemporary map of Peru, and two brief statements regarding the ascent. The American flag was left flying from a nine-foot pole, which we planted at the northwest rim of the dome, where it could be seen from the road to Cotahuasi. Here Mr. Casimir Watkins saw it a week later and Dr. Isaiah Bowman two weeks later. When Chief Topographer Hendriksen arrived three weeks later to make his survey, it had disappeared. Probably a severe storm had blown it over and buried it in the snow.
We left the summit at three o'clock and arrived at the 20,000 foot camp two hours and fifteen minutes later. The first part of the way down to the saddle we attempted a glissade. Then the slope grew steeper and we got up too much speed for comfort, so we finally had to be content with a slower method of locomotion. That night there was very little wind. Mountain climbers have more to fear from excessively high winds than almost any other cause. We were very lucky. Nothing occurred to interfere with the best progress we were physically capable of making. It turned out that we did not need to have brought so many supplies with us. In fact, it is an open question whether our acute mountain-sickness would have permitted us to outlast a long storm, or left us enough appetite to use the provisions. Although one does get accustomed to high altitudes, we felt very doubtful. No one in the Western Hemisphere had ever made night camps at 20,000 feet Page 47or pitched a tent as high as the summit of Coropuna. The severity of mountain-sickness differs greatly in different localities, apparently not depending entirely on the altitude. I do not know how long we could have stood it. It is difficult to believe that with strength enough to achieve the climb we should have felt as weak and ill as we did.