378 JOURNEY TO ANAMBARUIN-ULA.
the points where they break out of the mountains. Below that they begin to converge and join together, and the power of the torrents, thus augmented, results in a
more energetic erosion.
Turning out of the glen of Lu-tschuen-tsa, we crossed over a small secondary threshold and water-divide, and then kept along the edge of a minor watercourse, which, after following the base of the mountains for some distance, terminates in a perfect labyrinth of deep, wild ravines with perpendicular walls —' nothing but gravel and pieces of stone, grey and desolate, yet withal picturesque. At the first glance,
it looked to be a sheer impossibility to get camels across these deep gorges, carved through the gravel-and shingle, and yet we did succeed. This locality is known as Gang-go. Once across, we pushed on up the left bank of the watercourse, towards the south-west, the route being again for a short distance relatively good. This watercourse hugs closely the foot of a precipice, through which burst a number of small gorges and ravines, deep, steep, and fantastic, all ending in Gang-go, and like it all filled with detritus. Next we crossed over a series of ravines, some small, some of medium size; one of these also bears the name of Gang-go. Another, known as Otun-go, is particularly deep and difficult, and is provided with triple terraces, while its bottom is filled with stones and gravel. There too we observed a number of dry pieces of willow; these grew in an expansion of the
Fig. 300. FROM GASCHUN-GOL DOWNWARDS.
IIIFカラー高解像度
