
Why the Ming Dynasty's Unconquered Turtle Fortress Is Being Swallowed by Sand
Built in 1608 as an unbreachable Ming stronghold, the turtle-shaped rammed-earth citadel of Yongtai is slowly succumbing to the encroaching Gobi Desert.
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Built in 1608 as an unbreachable Ming stronghold, the turtle-shaped rammed-earth citadel of Yongtai is slowly succumbing to the encroaching Gobi Desert.