X74 THE SECOND CROSSING.
uncomfortable, roundabout road over the western ridge, which, however, has to be used if the river rises more than 3 m. At Linga the MU-chu is spanned by a
long bridge.
From the terrace slope on which Linga-gompa is built, one sees to the north the mountains round Donglung, where the valley and the road turn in a right angle to the west. To the N. 38° E. is a little valley called Kipuk, and N. 65° E. a mountain called Pongra. Due east is a mountain called Luchen in the background of Bup-chu. Yavo is a right tributary to the Bup-chu. To the S. 50° E. is mount Gäbri, and to the right of it the valley Tsalung.
Above Linga the valley is generally as before, only at one place, Takar-tang, is it wide; at Linga, the Bup-chu junction, the breadth is considerable, but higher up the valley is sometimes as narrow as a gorge. From the left or east enter Kipuk-nima and Melung-pu with slightly snow-covered mountains in the background. Donglung-pu is the next. From the right we have: Niense-pu, the brook of which is divided into two branches over the fan, and each has a bridge. Koruk is a valley with some snow; then follows the Rechik Chinchik is small, Langmar-pu is more considerable. Here the height is 4 331 m, at Camp 143.
Not far above Linga the rock consists of phyllitic-quartzitic schist; at the right side, opposite Tabu, and at Lang-metang the rock is pegmatite. A compact mountain at the right bank, called Takar, forces the river to the above-mentioned bend, Takar-tang. The terraces are 20 to 2 5 m high; blocks of all sizes are very common.
On the section between Langmar and Govo a great change takes place, for the valley, which so far has been meridional, now becomes latitudinal, running from west to east, parallel with the stretching of the great water-parting range to the north; the northern or left tributaries therefore now come directly from that range and not from ramifications. These left tributaries are: Pukchung and Pukchen situated between high but rounded mountain groups and ridges; Ke-tsangpo, the greatest of all tributaries above Bup-chu ; it is also called Ogorung-tsangpo, although this name by some informants is only fixed to its upper course or perhaps to a branch in its upper part. Ke or Ker is a village near the junction. The mountains at the western side of lower Ke-tsangpo are called Namnam, those to the east Ami-ri-rung. So far as can be seen the Ke-valley comes from N. 1o° W. and is regarded as a tributary to the Govo, although now, in April, the Ke had much more water than the Govo, which also forms rapids at the confluence; in the summer the Govo is said to carry more water, which is doubtful. Above the junction the Govo had now hardly IIi2 cub.m. water left. At any rate the Ke and Govo meet at Namnam-sumdo and form the MU-chu; at the junction the Govo-tsangpo is spanned by a bridge. So far as can be seen from the junction the upper reaches of Ke or Ogorung-tsangpo are surrounded by considerable mountain masses, being parts of the Pabla range. The river is said to be formed by the brooks from several high valleys, and one and a
IIIFカラー高解像度
