Linda sampling the ashy material in Structure Twelve’s north-western recess. In the foreground in Twelve’s eastern entrance and annexe. (📷 Sigurd Towrie)

Linda sampling the ashy material in Structure Twelve’s north-western recess. In the foreground in Twelve’s eastern entrance and annexe. (📷 Sigurd Towrie)

Linda sampling the ashy material in Structure Twelve's north-western recess. In the foreground in Twelve's eastern entrance and annexe. (📷 Sigurd Towrie)

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