The Church of San Michele can be found in Ploaghe, where the rural location of the village of Salvennero originally stood, abandoned at the end of the XVIII century.
In a papal seal, the Church appeared as an abbatial seat in 1138 and connected to the Vallombrosians, although very few traces of the monastery exist.
The church has a crux commissa and three apses. The single nave hall has a wooden ceiling, while the arms of the transept are cross vaulted.
Two building stages can be identified thanks to the differences in the faces.
The medium-sized limestone calcarenite walls of the facade, the apses and transept date to an initial period following the technique of the workforce operating in the Giudicato of Torres at the end of the XI century.
The two-tone gables on the main facades and the sacristy typical of the workforces active in the nearby factory of Sant’Antonio di Salvenero during the first quarter of the XIII century, date to a later period.
The facade, which has a circular oculus cruciform light, is framed by corner blocks and is split into three transoms. It was preceded by a pillared porch whose outlines are still visible.