The magnificent Valle Oscura Bridge, located just outside Groppodalosio—a hamlet of Pontremoli along the Via Francigena—has enabled the crossing of the Magra River since 1574. Nestled in a landscape of chestnut groves and terraced slopes, the bridge features a unique and remarkably steep 16-meter arch that has withstood centuries of time and floods, remaining an enduring symbol of the area.
The bridge connects Groppodalosio to Casalina via the current route of the Via Francigena. The easiest way to reach it is from Casalina, which is accessible by car. From there, a paved path leads directly to the bridge, taking about five minutes on foot.
To fully admire the beauty of the Valle Oscura Bridge, you can also descend into the riverbed near the bridge. Exercise caution, as the rocks can be slippery, but the reward is the refreshing waters of the Magra in a truly breathtaking setting.