Part 15/16:
The Long Yu Caves stand as a testament to the ingenuity—and perhaps the secrets—of ancient builders. From their precise workmanship and colossal scale to their baffling lack of historical mention, these chambers raise more questions than answers. Did they serve a practical function? Are they remnants of an advanced lost civilization? Or are they a piece of a much larger, hidden story?
One thing is certain: these caves are among the most astonishing and mysterious underground structures ever discovered, cementing their place as China’s unofficial "ninth wonder" of the ancient world.