What is VALLEY

In geology, a valley (also called a vale, dale, glen or strath and near or in Appalachia, a draw) is a depression with predominant extent in one direction. A very deep river valley may be called a canyon or gorge. The terms U-shaped and V-shaped are descriptive terms of geography to characterize the form of valleys. Most valleys belong to one of these two main types or a mixture of them, at least with respect of the cross section of the slopes or hillsides.

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白内障 潮吹き 白内障 結婚式 スピーチ 性病 男性 プラセンタ 中性脂肪 わきが 精力剤 早漏

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