Could the persistent draught which disfigured a region just until then verdant, be explained and combated, in retracing the existence of an immense fortress abandoned since the Middle Ages? That is the belief of a scientific team set up at edge of the Gobi desert.
But before the scientists can create a model of climatic changes, they will have to elucidate the mystery of Kara Khoto, the citadel in the sands
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