The Tramaced Serreta, with its eroded sandstones, forms a unique natural scene in La Hoya de Huesca. A small sierra – the serreta – formed by soft sandstone, has been eroded giving rise to cliffs with ledges over 40 m. high with a great many hollows
The Serreta has been catalogued as a ZEPA (special protected area for birds). It has many rock birds of prey, with several pairs of golden eagles, Egyptian vultures, a lot of owls and other birds such as the peregrine hawk, the red-beaked rook, the bee-eater and hoopoes.
