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Unexplained Architecture

Longyou Caves: China’s 2,000-Year-Old Underground Mystery That Defies Explanation

January 18, 2026January 18, 2026 by The Ghost of History
Longyou Caves

The Longyou Caves in China remain unexplained after 30 years. No records exist of their construction. Strange details baffle experts.

Categories Historical Oddities, Mysteries & Unexplained Tags Ancient, Archaeological Mystery, China, Construction Mystery, Underground, Unexplained Architecture
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