Perda Liana Natural Monument (Gairo)

Located at 1293 m above sea level, it is one of the morphological peculiarities of Sardinia. A typical rock formation, called "taccu" or "tònneri" in the local dialect, it constitutes in Ogliastra the most important witness of erosion of the ancient Jurassic limestone cover and its substrate. It has a composite profile: at the top, a majestic cylindrical limestone-dolomitic tower, whose sub-vertical walls appear divided into regular prismatic blocks due to the orthogonal arrangement of the fracture lines (h 50 m, diameter 100 m); at the base, a truncated-conical conglomeratic-arenaceous formation, the lower end of the Mesozoic series, overlaps the basement, consisting of the compact bedrock of Paleozoic schists (1100-1190 m asl).

Perda Liana is set in one of the most extraordinary and wild landscape contexts and is a landmark visible from a great distance.

The entire area is characterized by the presence of variously evolved Mediterranean scrub vegetation.

In the nearby area of Funtana e S'Aggina and partly near Punta Cartuceddu - Punta Perda Manna Oltramaxias, there is a tall scrub formation with holm oak, strawberry tree, mastic, tree heath, phillyrea, calicotome etc. In the remaining part, low scrub predominates, characterized by the presence of various species of cistus in addition to mastic, heath and calicotome. Small patches of woodland are preserved only in the steepest areas or along the ditches.