Southern Tibet : vol.7 / 792 ページ（白黒高解像度画像）

0792	Southern Tibet : vol.7
南チベット : vol.7

Along the left side of the valley of the Tagrak-tsangpo there runs a range
which could be called the Tagrak Range. It is some 150 km. in length and seems
to be bowed towards the south, as are other ranges in this region. It goes through
the district of Tova-tova, and is pierced by the broad and open valley of the Naong
River. How far it continues in the direction of Bara-tsangpo is unknown, though
it may easily be pierced by this river. Between the Tagrak Range and the next
range to the north of it there is a curved latitudinal valley. From its eastern half
a tributary, Kung-tsangpo, comes down to the Naong-tsangpo which, together with
other feeders in the region, form the Tagrak-tsangpo.
The Ngangtse Range has to the south the valley of Tagrak-tsangpo, and to
the north Ngangtse-tso and Marchar-tso. I crossed it in Ponchen-la, 5371 m. high.
A little range is situated south of the eastern half of Ngangtse-tso, with the pass
Chapkar-la, 5326 m. high. Perhaps it should rather be regarded as a ramification
from the Ngangtse Range, and so I have drawn it on the little orographic map
accompanying the last chapter of this volume.
North of Ngangtse-tso runs a range W. N. W.—E. S. E. which I crossed in
Lamlung-la, 5179 m. high. It probably continues to the region south of Chikut—
or Tsikut-tso—and approaches the western shore of Kyaring-tso where it was crossed
by Nain Sing in 1874.
The Ngangtse Range seems to continue to the east the whole way to Tengri-
nor. In this region the orography of Nain Sing is very vague. This is not surprising,
as he had no opportunity to cross these mountains. But he saw mountains at no
great distance south of his road the whole way to Tengri-nor, and very likely the
lake basins of Kyaring-tso, Mokieu-tso and the small lakes east of the latter are
bordered to the south by a range, as is the case with Ngangtse-tso, Teri-nam-tso
and many other lakes. The existence of a latitudinal range is at any rate more
likely than the curious meridional ranges between Bara-tsangpo and Ota-tsangpo as
drawn on Nain Sing's map. The latitudinal range has been called Nain Sing Range
by Colonel Burrard, and I have of course accepted the proposal, though I regard
it only as a provisional one. For in the future we will find local names, as Gya-
kharma or others, and then the invented personal name which is unknown to the
Tibetans, will have to disappear. Between and north of Nain Sing's lakes there are
small ranges chiefly with a west-east alignment.
It only remains to say a few words about the ranges situated to the south
of the Eastern Nien-chen-tang-la. We have seen above that the western portion of
the latter range is pierced by the Rykyok-chu, the upper Chaktak-tsangpo, the
Dongmo-chu, and the Mü-chu. In the region of Dangbä-la it forms a water-parting
and is not pierced by any river. East of this pass, which is situated on my eastern-
most transverse crossing of the Transhimalaya, the gigantic range, so far as is

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