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Xiaozhai Tiankeng : ウィキペディア英語版 | Xiaozhai Tiankeng
The Xiaozhai Tiankeng, also known as the Heavenly Pit, is the world's deepest sinkhole.〔(【引用サイトリンク】 title=Xiaozhai Tiankeng sinkhole )〕 It is located in Chongqing Municipality. == Dimensions == The Xiaozhai Tiankeng is 626 metres long, 537 metres wide, and between 511 to 662 metres deep, with vertical walls. Its volume is 119,349,000 m³ and the area of its opening is 274,000 m². This material has been dissolved and carried away by the river. The sinkhole is a doubly nested structure—the upper bowl is 320 metres deep, the lower bowl is 342 metres deep, and the two bowls are on average 257 to 268 m across. Between both these steps is a sloping ledge, formed due to soil trapped in the limestone. In the rainy season, a waterfall can be seen at the mouth of the sinkhole.〔(【引用サイトリンク】 title=Xiaozhai Tiankeng )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Xiaozhai Tiankeng」の詳細全文を読む
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