Innermost Asia : vol.2 / 353 ページ（カラー画像）

0353	Innermost Asia : vol.2
極奥アジア : vol.2

From here, on August 16th, we clambered up a thousand feet more over very steep rock Descent
slopes to the spur of Odiāz-kōtal (Fig. 386). On the north it was flanked by a high ridge of to new
shattered rock which the landslide had carried across from the opposite side of the Bartang valley. lake.
On descending from this newly formed pass amidst masses of detritus, I first sighted the narrow
fiord-like lake which had been formed in what was before the mouth of the Shedau valley by the
same huge barrage as had blocked the Bartang river. A difficult scramble over rock debris scattered
in wildest confusion brought us down to the northern end of the Shedau lake (Fig. 372). We had
now to pick our way with much trouble along the southern foot of this enormous barrage over
jumbled masses of rocks and detritus, until at last we gained the foot of the spur which divides
what was the Shedau valley from that leading towards the Langar pass. It was on ascending
this spur to the south-east that the full extent of the change wrought by that great cataclysm
revealed itself.
The fall of a whole mountain, completely blocking the river, had since February 1911 con- Fall of
verted the so-called 'Sārēz Pāmīr'⁴ into a fine alpine lake (Fig. 374), which already in 1913 was mountain
over 17 miles long and had since been spreading up the valley.⁵ Enormous masses of rock and blocking
detritus had been shaken down from the range on the north and had been pushed by the impetus Bartang R.
of the landslips up the steep spur flanking the mouth of the Shedau valley. The gigantic dam thus
formed seemed even then, four years after the great landslide, to rise more than 1,200 feet above
the level of the new lake. Fig. 373 shows it as seen from about 1,500 feet above the lake. Stone
avalanches were still descending from the scarred mountain side above the barrage and accounted
for the clouds of dust which are seen in the photograph (Fig. 373) rising on the uppermost slopes
of the mountain.⁶

At the very foot of the spur above mentioned, in a dismal mud-filled depression, I had the good Meeting
fortune to find a small Russian party under Professor J. Preobrazhenski just arrived in camp from the with Pro-
side of the Alichur Pāmīr for a systematic survey of the great barrage. A detailed record of the fessor
results of this has since been published by him in the Russian Geological Committee's Matériaux Preobra-
pour la géologie, &c. (Fasc. 14, Petrograd, 1920). The Russian scientists had arrived by skin raft zhenski.
from the southern extension of the lake, which they had reached across the Langar pass. In the
course of their very kindly welcome they expressed their belief that my intended passage with
baggage along the precipitous slopes above that inlet would prove impracticable. As, however, the
plucky Rōshānī headmen with us were quite prepared to make the attempt, the spur was ascended
to a height of about 13,200 feet and camp pitched beyond near a small spring some 600 feet lower.

When next morning a steep descent of some 2,000 feet had brought us down to the dazzling Difficult
green waters of the Yerkh fiord (Fig. 376), we realized readily enough the difficulties of farther passage
progress along the precipitous rock slopes thrown down by the earthquake and over dangerous above
debris shoots in many places still liable to move. Fortunately the men collected from the upper- Yerkh fiord.

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