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0384 Southern Tibet : vol.4
南チベット : vol.4
Southern Tibet : vol.4 / 384 ページ(カラー画像)

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doi: 10.20676/00000263
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202   THE JOURNEY TO TANKSE.

their peaks covered with some snow. The terraces of the principal bed are 3 m.   is

high. At the side valleys Parma and Datt, the main valley opens like a little plain and the fall becomes very gradual. The soil is swampy and there is some grass. Several manis and shortens are built here and at other places along the road. Near

the valley of Dungting to the right, a tent is passed. The valley then again becomes narrow. The road here follows the erosion bed at the base of its right

terrace. Opposite the large valley, Lalung, on the left, the bed is crossed on its ice, the water being only one foot deep. A ruined bridge has been built across the Lalung, showing that it may carry much water in the summer. Kongchu or Kongyu is the name of a nice lila or cairn with streamers and horns.

From the left enter the extensive valleys, Solung and Gorlung, from the right,

Lungser. The main valley is again broad and open, and the road runs along the left bank of its watercourse. Just below the mouth of the Gorlung valley, there is

a little village of two or three huts. The rocks to the right side of the valley con-

sist of very weathered porphyritic specimens, those to the left of dark hypersthenaugite-diorite. Near the base of the mountains on the left side, is a shallow pool,

called Salsal-tso, formed chiefly by an abundant spring of +5.2° temperature; only its western part was frozen. A short distance beyond it, we had our Camp CCLXVIII, Sara or Lung-yogma, where the large valley of Belmik enters from the left. Two Rudok caravans had been met in the course of the day.

On November 2 6th, we made 22 km. N. W. and north to Tankse, descending from 4,41 I m. to 3,990 m. or 42 I m. which gives a rate of I :52. The road leads across a little secondary threshold, 4,578 m. high, at the right side of which the brook has a deep-cut bed, like a gorge deep below our feet, when standing at the cairn of the threshold. Beyond the right tributary, Amsit-langj5o, the road follows

the detritus scree of the left side of the valley with a very steep slope. Here we are I o0 or 150 m. above the bottom of the valley where the ice ribbon of the river

winds, only occasionally with some open water in the middle. After a while the

road again leaves the river at some distance to the right and descends between hills of detritus and blocks. The landscape is wild and picturesque. One has a strong

feeling of having entered the peripheric regions with outlet to the ocean, the boundary being the Kongta-la. Here the morphology is wild and accentuated, not uniform and monotonous as on the Chang-tang or even in the upper valley of the Indus which, in spite of being peripheric, still keeps the features characteristic to the regions without outlet to the ocean.

At the village, Herat, with a few stone huts, walls, manis, shortens and fields, the road crosses the valley to its right side. At Chilam, a village, the brook is

crossed on a poor bridge. The terraces are some 20 m. high on the sides of the principal brook and in the tributary valleys. Skamlung, Shälchu-kul and Taruk