| Mountains of Sis | |
| Elevation M: | 1791 |
| Listing: | List of mountains in Aragon |
| Map: | Pyrenees |
| Map Relief: | 1 |
| Location: | Ribagorza (Aragon) |
| Range: | Pre-Pyrenees |
| Coordinates: | 42.4114°N 0.6442°W |
| Type: | Conglomerate |
The Mountains of Sis (Catalan; Valencian: Serra de Sis, or Catalan; Valencian: Serra del Cis; Spanish; Castilian: Sierra de Sis) is a 28km (17miles) long mountain range of the Pre-Pyrenees. They are located between the valleys of rivers Isábena and the Escales Reservoir, Noguera Ribagorzana, in the Ribagorza comarca, Aragon, Spain.[1] The ridge's highest summits are Pico de l´Amorriador (1791 m) and Puialto (1782 m). Other important summits are 1765 m high La Creu de Bonansa, 1490 m high Altaió d'Aulet and 1066 m high Tossal de Cornudella.
This mountain chain rises abruptly from a plain and looks quite impressive from certain angles, therefore in ancient geographic works this range was also referred to as "the Great Mountains of Sis" (Spanish; Castilian: la gran sierra de Sis) owing to the massive appearance of its mountains, abruptly rising as mighty foothills of the Pyrenees.[2]
The summits of this mountain chain offer an excellent lookout point to have a view of some of the main peaks of the Pyrenees from the south, as well as of the magnificent El Turbón in the west.[3] Some of the steep rocky cliffs of the range are popular with rock climbers.[4]
The 9th - 11th century Santa María de Obarra monastery is located at the foot of the western end of the Sierra de Sis range.[5] There are also abandoned villages and church buildings, as well as many ancient cattle farmers' buildings known as borda in the area.
| Some of the mighty cliffs of the rangeFile:Ermita de la Feixa (Baixa Ribagorça).jpg | Ermita de la FeixaFile:Font de Sant Cristòfol.JPG | View of the Font de Sant Cristòfol waterfalls |
Peña Montañesa