IIIFカラー高解像度
国立情報学研究所 - ディジタル・シルクロード・プロジェクト
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| IIIFカラー高解像度 |
| The Heart of a Continent : vol.1 | |
| 大陸深奥部 : vol.1 |
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引用情報
| 1887.] | FORMATION OF SANDHILLS. | 99 |
piece of ground, sometimes to a height of a hundred feet or even more.
This is a general section of them. At A the sand drops suddenly at a slope of -I. A is .a little below the highest point
of the hillock, and the edge it represents runs in an absolutely straight line through the length of the sandhill. The line of intersection with the ground (if the ground is level) is also absolutely straight, so that, looking towards the steep side, the sandhill presents the appearance of a well-constructed fortification. Every bush and piece of scrub on the plain has hillocks of sand on the leeward side. This is conspicuous, as the sand is white and the surroundings dark gravel. It seems to me that the sandhills are formed thus : A strong wind blows from the west, say, forming hillocks to the east of the bushes. At places where the bushes are close together, one hillock runs into another, several thus forming one big hillock. In the case of big ranges, I think it must have been started by a number of trees • growing on the stretch of fertile ground, or perhaps by a village, or a number of temples, as tradition says. The sand-range does not rest against any solid range, but occupies a position by itself between two ranges from fifteen to twenty miles apart, thus—
The plain between these two ranges is of gravel, underneath
* There are trees now growing in the neighbourhood to a height of twelve or fifteen feet, and these are sometimes in clumps of forty or fifty.
X 2000 FEET 8000 FEET
A stretch of fertile ground
Northern Range Sand Range
Southern Range
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