Radiocarbon dating pins date for construction of Uyghur complex to the year 777

Dating archaeological objects precisely is difficult, even when using techniques such as radiocarbon dating. Using a recently developed method, based on the presence of sudden spikes in carbon-14 concentration, scientists have pinned the date for the construction of an eighth-century complex in southern Siberia to a specific year. This allows archaeologists to finally understand the purpose for building the complex -- and why it was never used.

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