Urrieles Massif
Located between the valleys carved by the rivers Cares and Duje is the Central Massif, without doubt one of the most rugged and vertical of the Picos de Europa.
][tone] Serving as examples Alberto Rabadá [es] and Ernesto Navarro [es] opened up, in 1962,[3] the first route on its west face, 500 meters of vertical limestone, or the Sueños de Inverno (Winter Dreams) route, which required José Luis García Gallego and Miguel Ángel Diez Vives to hang from said wall for 69 uninterrupted days.
To the west one finds Bulnes, a village that, as much for its location as for the isolation that geography has subjected it to for centuries, perhaps best represents man's presence in this hostile environment.
Starting from the north and following the pointer of the clock, appears the Carnizoso tower (2,332 m), the Oso (Bear) tower (2,461 m), the Risco Victor (Victor Craig) and the falsely named Collada Bonita (Beautiful Hill), the Martinez Spire (2,422 m) from where it descends to the Collada Bonita (2,382 m), a favored place to observe the southern face of the Picu.
Continuing towards the south appears the Colladetas Tower (2,456 M) and next the Morra (Hill), a two-headed summit that has a maximum height of 2,554 meters, which is supposed to be the tallest of all the surrounding mountains, together with the Naranjo, the Jou Tras El Picu.
To the east of this group would be left only the Pena Castil (2,444 m), an impressive pyramid that marks the end, from the north, of the great heights of the Urrieles.
The Torrecerredo is accompanied by two points with unique names, because of its faces emerges the Risco Saint Saud (2,575 m) and, slightly more below, the Torre de Labrouche (2,525 m).
These summits take their names from two illustrious characters from Picos de Europa, (European Peaks), the count of Saint Saud and Paul Labrouche, long time companions and discoverers, during the end of the 19th century, one of many of the secrets of these mountains.
Cutting through the southern zone of the previous area, in other words, from the Tiro del Oso, and following the Astur-Leonesa border, you pick up the Picos Arenizas, a triple summit whose greater height reaches 2,515 meters.
Continuing this path toward the south of the Urrieles appears the slender and pyramidal peak Tesorero (2,570 m), notable for being the point where the three provinces that share the territory of Picos de Europa meet, this is Asturias, Cantabria and Leon.
To the south, back in the boundaries of this massif, is the Pena Olvidada (2,430 m) and to the northeast from the peaks of Santa Ana reaching to the towers of the Tiro Navarro, already previously commented on.
In the opposite direction, to the south of the Horcados Rojos would be the jou Sin Tierre, at whose northwest end one finds the Cabana Veronica refuge (2,325 m), the most unusual discovery in Picos, because its structure is the metal dome of antiaircraft batteries of an aircraft carrier vessel.
In this area located at the southwest of the central massif is the largest concentration of Picos de Europa's peaks, with various heights of over 2,600 meters.
Continuing in that western direction it begins to lose height with summits of minor importance to reach to the channel of the Rio Cares.
In the most southern area of the Urrieles, specifically between Cordinanes and Fuente De, rises up a great wall of mountains that receive the name of the Cifuentes groups.
