A green lung on the southeastern extremity of Sardinia. The area of the Sette Fratelli includes the mountainous areas and the state-owned forest of the same name, as well as the Monte Genis forest, which is inside the territories of nine Municipalities: Burcei, Castiadas, Maracalagonis, Quartucciu, Quartu Sant'Elena, San Vito, Sinnai, Villasalto and Villasimius.

The mountain range, consisting of seven peaks (which is where it gets its name), reaches heights of about one thousand metres: the highest is that of Serpeddì (1067 metres). The oasis is a triumph of nature, particularly for its woods and rare animal species. Strawberry trees, myrtle, heather, junipers, alder and holm oaks are the setting for encounters with wild boars, rabbits, martens, wild cats, golden eagles, peregrine falcons and exemplary Sardinian goshawks, a bird of prey native to Sardinia.

In natural settings of rare beauty and rocks shaped over time by the weather, amidst canyons and gorges like Baccu Anigiulus and that of Rio Picocca, as well as pinnacles, towers and valleys crossed by rivers (rivulets ofOllastu, Cannas and Maidopis), it is common to see deer and mouflons. In Campuomu, in the forestry station of Dr Umberto Noci, where visitors are welcomed, a trail begins, leading as far as PuntaSa Ceraxa. Along the trail, you will find the Arco dell'Angelo(Angel's Arch), a natural pink granite monument from which you can admire the entire valley of Castiadas, the Colostrai lagoon and theCagliaripart of Campidano.

Inside the forest of Sette Fratelli, another place worthy of a visit is the Grotta Fra’ Conti that, according to legend, was the shelter of a hermit, su Stumpu ‘e Giumpau, a rugged granite bastion, and sa Grutta ‘e sa Pipia (the cave of the little girl). Then there is the forest of Mount Genis, perfect for birdwatching enthusiasts, with hawks, barn owls and hoopoes flying overhead.

There is no lack of archaeological attractions: the whole oasis contains traces of nuraghi, Neolithic settlements and the ruins of a convent protected by centuries-old cork oaksandholm oaks.