Southern Tibet : vol.3 / 486 ページ（カラー画像）

0486	Southern Tibet : vol.3
南チベット : vol.3

upwards, but they have nothing to tell about the northern tributaries, as they had
no opportunity of making excursions to the north.

Camp 160, Yo'on, is at 4 919 m, showing a very moderate rise of the road
from Camp 159 with its 4 861 m. Camp 161, Raga-tasam, is at 4 948 m, but the
distance much shorter. To Camp 160 the road keeps to the left side of the river;
to Camp 161 to the right side; here the valley is narrower and the road sometimes
follows the slope above the river; one such place is called Oktsang-tang. The rock
is grey sandstone. The Raga-tsangpo is formed by two rivers which join at Kamba-
sumdo; the northern arm which comes from W. and W.N.W. is called Changshung,
the southern, which is followed by the road, comes from S.W. and is called Hloshung.
As could be expected from the whole orographical situation, the Changshung is the
greater of the two; it seems to gather its tributaries from the southern slopes of
the Kanchung-gangri.

The Hloshung is full of blocks, between which the ice is sometimes two feet
thick. From the right enter the tributaries Talung, Rachik and Lunglung; from the
left Nublung. The valley becomes broader and more like a plain, where the con-
siderable valleys Lamra, Shosar and Pangreng enter; Lamra comes from mount
Ngangba-kanja, which, from this side, looks like a black, conical peak. From the
left or N.W. comes a small tributary, Ni-taro; from the right, S.E., Novuk and Ta-
tsang. At the same side there is a miniature lake or rather pool, Tso-gelong, from
which a brook goes down to the river.

At Raga-tasam our road joins the tasam or highroad between Lhasa and
Ladak. At this place the following names of the surrounding places were given: to
the S.W. the valley Yumbo, joining the principal valley Yumshung, stretching west-
wards; to the S. 65° W. a mountain called Gal; the highest peak of Chomo-uchong
rises to the N. 83° W.; to the W.N.W. there is a temporary lake or swamp only filled
during the rainy season, and called Sham-tso; N. 25° W. is a black, partly snow-
covered mountain, Lombo, at the northern side of which a twin-lake is reported to
exist, called Takya-Man-tso-Pun-tso; one of these lakes is said to be greater than
Amchok-tso, the other smaller. I could not get any other information about this
somewhat mysterious lake. If it exists at all, it must belong to the same kind as
Amchok-tso and be situated at the northern foot of the western prolongation of the
Nien-chen-tang-la. The distance to the twin-lakes is said to be one long day's
march. Lakes are rather rare on the southern side of Transhimalaya, and those
existing always contain fresh water. On the way to Lombo a small pass Tungsi
or Tungsi-gunka has to be crossed.

From Raga-tasam to the N. 20° W. a road passes the La-pendang to Nyaga
and Targo-largäp, of which I could get no reliable information; the La-pendang is
probably not on the continental water-parting, for it is only two days' journey from
Raga-tasam; it is, however, said to be a rather high pass. To the N. 79° E. is
Ngangba-la a low threshold crossed by the tasam; N. 83° E. Ngangba-kanja is

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