It emerged thanks to a particular geological phenomenon and stands on a plateau amidst nuraghi and volcanic elevations. It is also the stage of numerous legends in which the protagonists are the janas, the fairy beings of Sardinian mythology. Sa Pedra Mendalza, literally ‘the stone that cleans or fixes’, is a basalt block, about a hundred metres high, that emerges a short distance from the village of Giave, in the captivating landscape designed by the volcanic craters of Meilogu. In geological language, it is defined a neck, which originated thanks to a process that began perhaps two million years ago, following the occlusion and extinction of a volcano. Over time, water and wind have patiently eroded the cone, while the internal ‘cap’ of magma has solidified, preserving itself until it reached its current shape.