The Canyon Gorropu marks the natural border between the municipalities of Urzulei and Orgosolo, is about 1,5 km long, from the tip Cucuttos (888m), it sinks to about 500m. ; on the bottom it narrows until reaching, in some points, the minimum width of 4-5 m.

These characteristics of size and shapes, makes Gorropu a masterpiece of nature and at the sime time a precious treasure chest of biodiversity.