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

IN THE VALLEY OF THE BUPTSANG-TSANGPO.

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From Camp 420 my road follows the left bank of the Buptsang-tsangpo northwestwards. On an average the valley seems to be i o miles broad, though some passages are narrow; one of these is just below Camp 420, forming a reale or

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in quartz-porphyry. Here three brooks from springs join the river, which is shut in

between 20 or 2 5 m high erosion terraces. The narrow passage is short and the river soon comes out into the open level valley, with the Lunkar range to the left, and to the right a low range which must be the N.W. continuation of the Lapchung. This place is called Mabiya. The road is much worn by the traffic of salt caravans to and from Tabie-tsaka. The view is free and open far away to the N.W. down to the Tarok-tso. From the left side enter two valleys Nalung-lungpa and Nate, without roads to passes. The river keeps to the right side of the valley where the mountains are called Kukchung. The soil is extremely arid, and only some sparse grass is seen along the river. The region of Camp 42 I is called Mabiyetangsang-angmo, at 4 704 m. From here the Nate-valley is seen to the E.S.E; to the S. 3° VAT. is Nara, and Rabyi is a valley S. 22° W. In this section of the Lunkar range there are said to be no trafficable passes.

On the road to Camp 42 2 the valley again becomes narrower. The erosion terraces are in several stories and sharp cut, some 2 5 or 3o m high. At a sharp bend to the west the river sweeps the foot of the porphyry and quartz rocks. Shangchung is a tributary from the left side. At Tuta, Camp 42 2, the height is 4 664 m; the name of the district is Bongba-tsaruk, and a meadow at the river is known as Tsaruk-gunsa. To the west is a pass in the Lunkar range called Pechen-la. Between the Lunkar and the Kapta ranges, west of it, there must be a valley parallel to the Buptsang valley and with a threshold equivalent to the Samye-la; from the S.E. side of that threshold one of the feeders of the Tsa-chu-tsangpo must take its rise. The natives asserted that, crossing Pechen-la, one comes to a lake called Senit-tso which is of the same size as the Chunit-tso. The road to Pechen-la goes up the valley of Shangra, from which a very considerable bed comes down to the Buptsang-tsangpo, and now contained only 3/4 cub. m a second; its erosion terraces are as high as those of the main river and in three levels.

Below the mouth of the Shangra the valley becomes broader, at least i 2 miles across, and widens out to a real plain with very arid soil. From here a part of the Tarok-tso is visible, as is also, to the N. 53° W., the hill of Lunkar-gompa. The mountains at the right, N.E., side of the valley are low, and pierced by very small transverse valleys. The Lunkar range, which, in this region, is the highest Transhimalayan range, seems not to be very imposing, as its crest is hidden by lower front hills.

At Camp 42 3, Tarok-shung, the height is 4 63 2 m. A mountain to the S. 20° E. is called Malung-gangri. A brook entering the Buptsang-tsangpo near the camp, is called Malung-chu in its upper part, and Shangdok-chu lower down. To the S. 27° W. is Lungnak- an ri, and S.W. is the deep-cut valley of Lungnak. Through this valley

a days' g g   go to Tuksum, crossing an easy pass called Lungnak la.

7 y road is said to g   g

45-141741 III.