Southern Tibet : vol.3 / 346 ページ（カラー画像）

0346	Southern Tibet : vol.3
南チベット : vol.3

to the great rounded heights where the valleys are comparatively shallow. East of
Camp 119 considerable mountains are seen, from the valleys of which the water
comes down to Tagar-ongma.

From Camp 119 the road again aproaches a pass. It follows the very gra-
velly valley to Chesang, which receives from the right side the tributaries Chage-
lung and Lungsang, the latter with a road to the above-mentioned place Chingdu.
Chialung is a point with pasture and a tent; further on the right tributary Chesang-
larnang comes in from the S.E. The road up to the pass is not quite as steep as
that of Shib-la, but full of detritus, nothing but blocks and gravel. Only near the
pass is there solid rock of porphyrite. The name of the pass is Chesang-la, and
its height is 5 474 m, only 32 m less than the water-parting Sela-la. This gives an
idea of the general evenness of the crests. The pass is flat and covered with heaps
of gravel.

On the south side the small valley Terung-pa goes down to the greater
Yangsar. This valley is also full of blocks and gravel; it has three fluvial terraces,
each about 5 m high, remains from a time of profuse precipitation. From the left
side the valley Lever joins. One valley opens out to a plain and receives several
tributaries from the right or west; the principal watercourse keeps to the left side
along fairly high mountains. Camp 120 is called Tak-rerar, but the whole valley
around is Sham. The height is 4 635 m.

Below the camp the valley again gets narrower. The widening of Sham must
during rainy summers become a real swamp, as watercourses gather here from all
sides. From the left a short and steep valley, Deunglung, comes down, from the
right Pale and Yangsang. Here is a mani-rigmo, 45 m long.

Finally the Sham valley joins in a small widening the greater Bup-chu or
Bup-chu-tsangpo, the most considerable river in this part of the Transhimalaya. It
flows from east to west, and has even now, at the coldest season, open water in
its middle, perfectly clear and with plenty of fish. At the junction the Sham river
forms an ice delta in the gravel of the valley. In summer the Bup-chu is said to
be so swollen that it cannot be crossed without a ferry.

It is difficult to understand the general orography in the upper reaches of Bup-
chu. Its sources are said to be at a distance of two long journeys to the N.E.
From its principal source the river first flows southwards and then gradually turns
west. From the junction with the Sham it first continues S. 80° W., then west, and
finally N. 80° W. and joins the Mü-chu near Linga-gompa. The distance from the
junction of the Sham and Bup-chu to the junction of the Bup-chu and Mü-chu was
reckoned by the Tibetans as two long marches; in fact it must be about 40 km.
The fall of the valley on this distance is 136 m, for the first junction is at 4 467
m, and the second, near Linga, is at 4 331 m. On the other hand, the fall from
Chesang-la to the Sham junction is more than 1 000 m, which gives an idea of the
vertical undulations of this road.

国立情報学研究所 - ディジタル・シルクロード・プロジェクト
『東洋文庫所蔵』貴重書デジタルアーカイブ

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国立情報学研究所 - ディジタル・シルクロード・プロジェクト 『東洋文庫所蔵』貴重書デジタルアーカイブ

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OCR読み取り結果

国立情報学研究所 - ディジタル・シルクロード・プロジェクト
『東洋文庫所蔵』貴重書デジタルアーカイブ