The Tiber Valley (Italian: Valle del Tevere) is the largest geographical part of the Tiber basin [Wikidata][1] of the Tiber river included in the Emilia-Romagna, Tuscany, Umbria, and the Lazio regions; it is characterized by river terraces and floodplain areas that extend from the Apennine belt up to the delta of the Tiber river in the Lazio coast [it] of the Tyrrhenian Sea.

The Tiber basin is made up of four main morpho-structural environments:[2]

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