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0701 Southern Tibet : vol.7
南チベット : vol.7
Southern Tibet : vol.7 / 701 ページ(白黒高解像度画像)

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doi: 10.20676/00000263
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CHAPTER LVII.

THE FORMATION OF PANGGONG-TSO.

Before proceeding to the description of the Selling-tso—Panggong-tso latitudinal
valley, I will say a few words of the latest phase of the history of the first-
mentioned lake.

There are two pairs of lakes which offer an extremely clear idea of the course
of development through which the Panggong-lakes have passed, viz., the two lakes
near the source of the Yellow River in the extreme N. E. of Tibet, and the Mana-
sarovar-Rakas-tal in the extreme S. W. of the same highlands. As to the first-men-
tioned, I borrow the following description from P. K. KOSLOFF who visited them on
his journey in Eastern Tibet from May 1900 to June 1901:

The Mongols call the western lake Jarin-nor, and the eastern Orin-nor; the
Tsaidam Mongols also use the names Tseke-nor (the Lake whose bottom shines
through) and Tsege nor, (The Transparent lake); the Tibetans and Tanguts call
them Mtso Khchara and Mtso Khnora, and Prshevalskiy, who first gave a description
of them, baptized them with the superfluous names The Expedition Lake and the
Russian Lake. »These two freshwater basins are separated from one another only
by a mountainous neck of land with a breadth of up to 10 versts¹, and are situated
at an absolute altitude of 13,900 feet (4238 m).» The Orin-nor has a circumference
of about 120 versts, and its long axis stretches from north to south, whereas the
Jarin-nor, which stretches from west to east, has a circumference of less than 100 versts.
Both lakes are surrounded by high, rocky, steep shores with many narrow capes
and promontories. Along the shores there are several small lakes or pools, which
formerly were parts of the large lakes but now have been cut off by sand banks.
They contain brackish or salt water. The upper lake, Jarin-nor, seems to be shallow,
as the bottom, especially in its western part, is visible and there are several islands.
The lower lake, Orin-nor, is comparatively deep. Along the long axis of this lake