The Torrent de Pareis is unquestionably one of Mallorca’s natural wonders, and possibly its most spectacular. Born at an altitude of 150 metres, out of the confluence of two streams, the Torrent des Gorg Blau and the Torrent de Lluc, in an area known as S’Entreforc, the Torrent de Pareis meanders down to the sea along its 3.3-km course amid canyon walls that tower as high as 200 metres. The descent, which moves SE-NW, has an average gradient of 5.14 % until it reaches the sea at Sa Calobra.
The stream’s topography and landscape are the products of the abrasive action of the stream water on calcareous stone and the dissolution of rock due to contact with rainwater. These processes have given rise to karst formations and created caves, chasms, fields of lapies, dolines, etc. In the case of the Torrent de Pareis, they have also led to a large tectonic fracture, with visually spectacular results. The Torrent des Gorg Blau originates at Tossals Verds.
Its course was altered in 1972 with the construction of the Gorg Blau reservoir. With a basin measuring 14 square kilometres and an altitude difference of 627 meters, the gorge becomes more pronounced in its final section, where the canyon’s towering walls and narrow breadth block the entry of natural light. These features, together with the high level of humidity, make for an extraordinary and unique ecosystem locally known by the descriptive name of Sa Fosca, or, “the dark spot”.
The Torrent de Lluc runs through the valley of the same name and continues into the Clot d’Albarca valley. The basin of this stream covers a surface area of approximately 28 km², with an altitude difference of 500 m.