The regional park of Sette Fratelli - Monte Genis, su cungiau regional de Is Setti Fradis - Monti Genis in Sardinian, with its 58,846 hectares of extension, is among the largest parks in Sardinia. The park extends to the south-east of the province of Cagliari and involves nine municipalities. It occupies part of the Sarrabus and Campidano of Cagliari. It is a sparsely inhabited area; the only inhabited center of the entire park is Burcei, which is completely surrounded by the park. The main road that crosses the park is the Strada Statale 125 Orientale Sarda.
Almost all the mountains in the park do not reach 1000 meters in height. The only mountains that exceed this altitude are Mount Serpeddì, a sharp mountain that dominates the lower Campidano and the Golfo degli Angeli, which reaches 1069 meters in height, and Punta Sa Ceraxa one of the Sette Fratelli, which reaches 1016 metres. Several streams flow through the park which then give life to some medium-sized watercourses with a greater flow rate, such as the Su Pau stream which flows into the territory of Quartu Sant'Elena in the locality of Flumini.