A group of Chinese researchers identified and explored an ancient cave so unusual that an extraterrestrial hypothesis was quickly taken into consideration.

The fascinating ruins were discovered in the remote wilderness area that makes up most of the intersection between China’s Qinghai Province and the Tibetan Autonomous Prefecture.

Throughout history, humans have rarely settled in this hostile and inhospitable region.
Sometimes herds of migrants cross the mountainous regions to the north.

In the region there are no industrial factories, nor the remains of civilizations with advanced metal processing capabilities.

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