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| 0415 |
Southern Tibet : vol.2 |
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CHAPTER XLIII.
RYDER, RAWLING, AND BURRARD.
The principal geographical result of YOUNGHUSBAND's famous mission to Lhasa
was the excellent map drawn of the Tsangpo valley. Of the tributaries only the
Nyang-chu and Maryum-chu were completely surveyed as well as the lower part of
the combined Ki-chu. Of the other tributaries not much more could be touched
than had been seen by Nain Sing. But from their triangulation stations RYDER
and his comrades had a much wider view than Nain Sing could get from the road.
Thus, for instance, Raga-tsangpo has got a great number of northern tributaries
and Amchok-tso is an important addition. The Chaktak-tsangpo and Tsa-chu-tsangpo
have been enormously improved. Ryder's map of the Tsangpo and of the courses
of its tributaries so far as they could be seen, will for ever remain a foundation for
future exploration in these parts of Tibet. Thus his map has a greater fundamental
and historical importance than any other in existence, only except the Chinese
maps, which must be considered for a much greater area. As RAWLING's and
Ryder's expedition was for a great part of the journey separated into two parties, it
often carried out so much work as two ordinary expeditions would have done.
Ryder crossed three southern tributaries, two of them called Shap Chu and
Sakyatrom Chu, and then followed the lowest part of the Chi Chu. South of Kura
La (17,900 feet) he touched the headwaters of Chi Chu. From Sheru La (17,600 feet)
a very small tributary goes down to the Tsangpo. Between Chi Chu and the brook of
Sheru the Tsangpo was found to run between rocky hills with snow-peaks on either side.
A short distance above Lhatse Captain WOOD found, on October 26th,
a ford, by which the ponies were able to cross the Tsangpo. Wood says of the
valley of the Raga-tsangpo:¹ that it is narrow, running almost due east and west,
parallel to and about 30 miles to the north of the main river . . . On November 5
we crossed the Ku La (16,700 feet),² situated at the headwaters of the Raga
Tsangpo, and by a steep descent dropped into the valley of a small stream draining
into the Tsangpo³. Near Saka-dsong Wood ascended a peak to the north (19,300
feet), from which he had a fine view north up the valley of the Charta Tsangpo.³
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