It is one of the richest and most captivating green areas in the south of the Island, to be visited by following evocative trails. The state-owned forest of Marganai, in the Sulcis area, occupies 3,650 hectares of the territory of Domusnovas, Fluminimaggiore and Iglesias and it is also part of the park that unites Monte Linas and Montimannu. In spite of intensive exploitation by humans, its scenic beauty is still intact.
The mountainous massif, made of limestone and schistic rock and among the most ancient in Italy, has uneven peaks that range from two hundred to one thousand metres in height, covered by lush forests of holm oaks, which are original, and pines, planted during the reforestation. Next to it, there is dense Mediterranean scrub: olive, mastic, wild olive and strawberry tree.