Aiguille SW de Cerbillona, Mountain summit in Torla-Ordesa, Spain and Cauterets, France.

The Aiguille SW de Cerbillona, also called Garmo de ros Musaretz in Aragonese and Aguja SW de Cerbillona in Spanish, is a 3,042 m summit on the south ridge of the Cerbillona peak in the Vignemale massif, Huesca province, Aragon. Its prominence is only 8 m, and the Basque name Cerbillona HM Orratza gives 3,048 m.

The name Garmo de ros Musaretz, recorded in Aragonese, refers to the southwestern needle of the Cerbillona ridge in the Vignemale massif. The summit rises to 3,042 m with a prominence of only 8 m, so it is a secondary top on the south ridge of the Cerbillona peak rather than an independent mountain. Its height is given as 3,048 m in Basque sources.

The summit carries two names from the two sides of the border: Aragonese speakers call it Garmo de ros Musaretz, while Spanish and Catalan maps label it Aguja SW de Cerbillona, and Basque climbers know it as Cerbillona HM Orratza. The Aragonese name refers to the south-west shoulder of the Cerbillona peak in the Vignemale massif.

Sturdy footwear and experience with climbing equipment are necessary due to exposed ridges and rock sections throughout the route. Weather can change rapidly at this elevation, making early starts and careful planning important for safety.

The summit's name varies by language and slope: Aragonese Garmo de ros Musarez, Spanish Aguja SW de Cerbillona, Basque Cerbillona HM Orratza. Sources give its height as 3,042 m (Aragonese Wikipedia) or 3,048 m (Basque Wikipedia), with a prominence of just 8 m on the south ridge of the Cerbillona peak in the Vignemale massif, Huesca province, Aragon.