Geneses of Jingpo Lake, Diaoshuilou Waterfalls and Heilong Pool

When a volcano lying tens of kilometers away from the west of Jingpo Lake erupted, the turbulent and hot lava flow run eastward into Mudan River along the valley and blocked the Mudan River channel like a dam, which made  the water level rise and the water acreage enlarge, thus led to formation of the largest volcanic dammed lake in our country – Jingpo Lake. The surface of rushing and rolling lava flow rapidly cooled down and solidified to hard crust, while the lava within the crust still remains underflow forward in the form of liquid. When no subsequent lava supplied, the flowing lava beneath the hardened surface would gradually drain off, so that a cave-like tunnel was formed in the lava interior, such as lava tunnel. The lava tunnel tends to collapse due to the cracks on the roof formed in cooling and solidification. Here is the landscape caused by the collapsing of large lava tunnel. The water of Jingpo Lake flows over the cliff where the lava tunnel collapsed, and formed the largest basalt waterfall in the world – Diaoshuilou Waterfalls. The plunging water gathers at the collapsing place, and forms the rough Heilong Pool.
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