Shi Men Jian Valley (Stone Gate Valley)
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各国解说:

Shi Men Jian Valley is a box-shaped valley. It is far deeper than it is wide. It was formed along vertical crevices in hard rock where the river flow was rapid. Shi Men Jian Valley was originally a glacial U-Valley. Later it turned box-shaped because of the flow of water from melting ice at the end of the glacial period.