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Archaeologists are scratching their heads about an underground pyramid-shaped structure they have been excavating beneath the historic medieval town of Orvieto in Italy.
« We discovered it three summers ago and still have no idea what it is, » writes Prof. David B. George of St. Anselm College and co-director Claudio Bizzarri of PAAO and colleagues about the site. « We do know what it is not. It is not a quarry; it’s walls are too well dressed. It is not a well or cistern; its walls have no evidence of hydraulic treatments.
Lire l’article sur sciencepost.fr
