along the SS 442, in the territory of Masullas, in Sardinia, it is possible to observe a curious stone block perfectly spherical: Sa Perda Sperrada. Characterized by a perfect central slit, from which it derives its name. It testifies to the erosive action of the atmospheric agents: water, the alternation of hot climates and colder, in the course of millions of years have shaped this rock by the birth of the legend: narrates that this was a pig turned into stone and split by a kick from Luxia Arrabiosa, a legendary character of the area of Mount Arci.

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