Thẩm_Khuyên_Cave
Thẩm Khuyên Cave
Cave formation in Vietnam
The Tham Khuyen is a palaeontological formation located in Vietnam. It dates to the Jurassic period. The cave is located in Lang Son province, about 125 kilometers northeast of Hanoi.
Cave formation in Vietnam
The Tham Khuyen is a palaeontological formation located in Vietnam. It dates to the Jurassic period. The cave is located in Lang Son province, about 125 kilometers northeast of Hanoi.
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