Southern Tibet : vol.3 / 454 ページ（カラー画像）

0454	Southern Tibet : vol.3
南チベット : vol.3

On our way to the south appears more and more sharply defined the mighty
range with the continental water-parting.
The region round Camp 151 on the left bank of the Targo-tsangpo is called
Tsangdam, and the height is here 4 758 m. To the S. 30° W, is a secondary
pass, Paklam-la, and beyond it the mountains of Angden-la. The whole range to
the south and S.W. was here called Gangri-tau or Gangri-do; it was called
simply Do by other informants. A part of it, to the S. 55° W., is called Gangri-
masa, and another, to the S. 69° W., is Tsari-nakpo; S. 85° W. is a saddle in the
range with a road westwards, gradually turning to the much-heard-of pass, Barong-
la or Parung-la, mentioned above; from a distance it seems to be situated in a low
mountain-bridge or connection between Targo-gangri and the range west of it; over
it a five days' road is said to go to Largâp-chagma, a district probably west or
S.W. of the southern corner of Dangra-yum-tso. To the N. 73° W. Punkar is a
small peak with snow. A fairly great valley at its eastern side is called Lungring,
with its tributary Tarlung; both seem to come from the connecting link between
Targo-gangri and the western range.
From Tsangdam the road goes south-westwards, slowly diverging from the
Targo-tsangpo after having crossed its two terraces on the left hand, the lower 4,
the upper 3¹⁄₂ m high. The valley through which the river issues from the moun-
tains is clearly seen, and the bed of its upper part is full of ice; on the second
crossing we saw the place where the river enters this little range; here, where
it leaves it, the valley is as narrow and impracticable as in its upper part. The
connection of Barong-la between the two ranges shows itself more clearly as we
proceed, although its morphology remains impossible of discovery. The Targo-gangri
sends out six glaciers to the west and S.W., smaller even than those to the east
and N.E.
The water-parting between the Targo-tsangpo and the Shuru-tso is curious,
for it is a plain, as level as the frozen lake itself, and it is impossible to discover
where the culmination is. The height is 4 763 m, or some 40 m above the sur-
face of Shuru-tso. There are no traces of running water, no ravines, no undulations,
the whole plain is perfectly level, and the hard ground consists of fine gravel. This
plain was once covered with water, and the Dangra-yum-tso and Shuru-tso formed
one single lake, which is obvious from the fact that the Dangra-yum-tso is surrounded
by 90 m high beach-lines and lacustrine terraces.
Near the shore of Shuru-tso the road suddenly descends a 6 m high terrace;
farther on, this terrace becomes higher and has a steep fall to a lower terrace along
the shore. The upper terrace is about 30 m high, and cut through by ravines, some
with rounded, others with sharp sides. The greatest of them is Sharma, some 60 or
70 m broad near the shore; its right side is almost perpendicular, and shows that
it is cut through clay and sand; the bottom is gravel. The next ravine is called
Lungchun; just in its prolongation the water was open near the shore; otherwise the

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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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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
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