But even this was not the greatest height at which bird life was encountered. In the Grand Basin, at sixteen thousand five hundred feet, Walter was certain that he heard the twittering of small birds familiar throughout the winter in Alaska, and this also was in the mist. I have never known the boy make a mistake in such matters, and it is not essentially improbable. Doctor Workman saw a pair of choughs at twenty-one thousand feet, on Nun Kun in the Himalayas.
Avalanches
Our situation on the glacier floor, much of the time enveloped in dense mist, was damp and cold and gloomy. The cliffs around from time to time discharged their unstable snows in avalanches that threw clouds of snow almost across the wide glacier. Often we could see nothing, and the noise of the avalanches without the sight of them was at times a little alarming. But the most notable discharges were those from the great ice-fall, and the more important of them were startling and really very grand sights. A slight movement would begin along the side of the ice, in one of the gullies of the rock, a little trickling and rattling. Gathering to itself volume as it descended, it started ice in other gullies and presently there was a roar from the whole face of the enormous hanging glacier, and the floor upon which the precipitation descended trembled and shook with the impact of the discharge. Dense volumes of snow and ice dust rose in clouds thousands of feet high and slowly drifted down the glacier. We had chosen our camping-place to be out of harm’s way and were really quite safe. We never saw any large masses detached, and by the time the ice reached the glacier floor it was all reduced to dust and small fragments. One does not recall in the reading of mountaineering books any account of so lofty an ice-fall.
Cutting a staircase three miles long in the ice of the shattered ridge.