Southern Tibet : vol.3 / 209 ページ（カラー画像）

0209	Southern Tibet : vol.3
南チベット : vol.3

To return to Nain Sing's report, he saw a snowy range extending from Tárgot
Lhá to the east. There is no sign of such a range in reality. East of Targo-
gangri there is a broad, open valley and east of it comparatively low mountains.
But south of Ngangtse-tso and Marchar-tso, Nain Sing's Darú Cho, there is a range,
stretching east and west, which I have called Ngangtse Range, no other name exist-
ing. It is impossible to reconcile Nain Sing's ranges with facts. South of the east-
ern end of Ngangtse-tso he has two ranges at resp. 22 and 37 miles' distance. The
latter may be meant to be the water-parting, although this is in reality 45 miles
south, namely, the great range Pabla which is the western continuation of Nien-
chen-tang-la. South of the S.E. corner of Dangra-yum-tso Nain Sing has a range
at 10 miles' distance, whereas in reality the principal range is at 55 miles from the
same point. From Tárgot Lhá to Gyákharma peaks the snowy range is given as
180 miles long, which must be along all the windings and bends of the range, for
else the distance between the two terminal peaks is only a little over 140 miles.
These mountains along the western shore of Dangra-yum-tso are the best, but the
southern ranges are very uncertain, which is not surprising, for from Nain Sing's
route there is no possibility to judge as to their situation.
As the orography is wrong one could not expect much of Nain Sing's hydrog-
raphy. Nobody had heard of his Dobo Dobá Cho, supposed to be in connection
with Kyáring Cho by the river Duba or Pará Sángpo. All watercourses in this
region go with the Tagrak-tsangpo to the west end of Ngangtse-tso, or exactly in
the opposite direction. But there is a district Tova-tova south-east of Ngangtse-tso.
Trotter may be said to be right in his supposition that Nain Sing's southernmost range
is not the watershed of the Brahmaputra, for this is situated further south. When I
had crossed the Sela-la I expected to come down to a river flowing east and north-
east and piercing the Nien-chen-tang-la to Kyaring-tso. For south of his southern-
most range Nain Sing has a rather long river, Dumphu or Hotá Sángpo going to
that lake. But in reality all watercourses streamed westward and belonged to the
Brahmaputra system. So the Ota-tsangpo, as the river was called, proved to be
much shorter. Of the lakes Ngangon Cho and Siro Cho I could get no information
and those Tibetans I asked had not heard the names. The twin lakes Mun-tso
were known and said to be situated west, not south of Dangra-yum-tso. Every-

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