Valdichiana, also called Val di Chiana or the Chiana Valley and formerly the Clanis Valley, is a tectonic valley of central Italy whose floor consists of alluvial deposits built up since the 11th century. It lies across the provinces of Arezzo and Siena in Tuscany and the provinces of Perugia and Terni in Umbria.
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Valdichiana (Wikipedia)
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The Val di Chiana, Valdichiana, or Chiana Valley, formerly Clanis Valley, is a tectonic valley of central Italy, whose valley floor consists of important alluvial residues filled up since the 11th century, lying on the territories of the provinces of Arezzo and Siena in Tuscany and the provinces of Perugia and Terni...
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