sardinia. tourism. sustainable viability. capo altano cycle and pedestrian path in portoscuso, in the sulcis region

road infrastructure highway lane asphalt transport walkway freeway coast sea vehicle sign soil wind tarmac track sardinia tourism sustainable viability capo altano cycle pedestrian path portoscuso sulcis region trekking southern route cammino minerario santa barbara mining italy start gate entrance finish signal reserved cycles western pillar reflector