Just inland from Porto, the awesome Gorges de la Spelunca offers splendid hiking, plus freshwater swimming on hot days. A 45-minute trail, marked with orange blazes, leads eastwards through the heart of the canyon from the bridge over the Porto River, 2km east of Ota on the D124, to the Pont de Zaglia, an 18th-century Genoan stone bridge.

For a longer hike, walk the whole way from Ota to Evisa (2½ hours each way).