Between the 7th and 9th centuries, the Arno River looked very different from its current appearance, shaped by the House of Lorraine of Tuscany up to the present day.
Goods entering the Tuscan hinterland had to depart from Pisa and arrive at Porto di Signa, where the Gonfolina boulder made the stretch no longer navigable.
To reach Fiesole, the Vikings had to travel on foot.

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