Sauva Negra, Protected forest area in Castellcir and Centelles, Spain.

Sauva Negra is a beech forest of 110 hectares, mostly on the shady north-west slope of Serrat Rodó between 750 and 924 metres, in the municipalities of Castellcir (Moianès) and Centelles and Balenyà (Osona). The Font de Sauva Negra lies at its eastern edge, near the Coll de Sauva Negra.

La Sauva Negra has been a destination for excursions since the late 19th century. The forest is a protected natural space within the Pla d'Espais d'Interès Natural, covering 110 hectares across the municipalities of Castellcir, Centelles and Balenyà.

The name refers to the dark canopy created by the dense tree cover throughout the woodland. Local residents have long valued this space as a retreat and source of natural resources.

Multiple entry points provide access to the forest with marked trails connecting different sections of the protected area. Wearing sturdy shoes and allowing extra time for navigation through the woodland is advisable for most visitors.

The Font de Sauva Negra lies at the forest's eastern edge, on the Osona boundary. The protected area covers only 110 hectares between 750 and 924 metres: 67.35 in Castellcir (Moianès), 40.03 in Centelles and 2.62 in Balenyà. Beech woodland of eurosiberian character survives here as a relict stand, unusual on the Moianès plateau.