Phát hiện dấu tích người tiền sử tại Cao nguyên đá Đồng Văn
200 di vật tìm thấy ở Cao nguyên đá Đồng Văn là công cụ Văn hóa Sơn Vi thuộc hậu kỳ thời đại đồ đá cũ ở Việt Nam.
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