Introduction to Silver Fox Cave: Also known as Sanying Cave, it is another large cave group located 100 meters south of Yingshui Village, Fozizhuang Countryside, Fangshan District. It is due to the discovery of a large white calcite shaped like a fox that is rare in the world's caves. Named after the crystal. Silver Fox Cave was developed in the Ordovician limestone more than 400 million years ago. The entrance of the cave is 207 meters above sea level, with a relative height of 10 meters. The cave is more than 5,000 meters long. Nearly 3,000 meters have been developed. It is known as the "underground labyrinth of North China". .

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