Welcome to the mini-Sahara of Sardinia. The dunes stretch over 5km and are around 60m high, lining the emerald sea and pushing inland as far as the woods of the hinterland; only the robust scrubland, dotted with olive trees bent by the mistral's winds, stops its advance. This protected natural landscape is the theatre of the Riserva naturale del Monte Arcuentu e Rio Piscinas, which can only be explored on foot or horseback. To reach Piscinas, the queen of the Costa Verde's beaches, you will have to cross the ford Rio Piscinas.