Sant Miquel de Solterra, Mountain summit in the Guilleries Massif, between Sant Hilari Sacalm and Osor, Catalonia, Spain

Sant Miquel de Solterra is a 1,202-metre mountain between Sant Hilari Sacalm and Osor in the Selva comarca, part of the Guilleries. On its summit stand a cross with three ants, the remains of the circular tower of Solterra castle and of the chapel of Sant Miquel de Solterra, and an old geodesic vertex marker (reference 298100002).

The summit holds the remains of Solterra Castle, including the base of a circular tower, and of the chapel of Sant Miquel de Solterra. The mountain lies between the municipalities of Sant Hilari Sacalm and Osor, in the Selva comarca, and its name also appears as Sant Miquel de les Formigues.

The summit is one of the 100 cims (peaks) listed by the FEEC, the Catalan Federation of Hiking Clubs, a collection Catalan hikers aim to complete. At the top stands an iron cross bearing three ants, a reference to the name Sant Miquel de les Formigues ("of the ants").

Hiking routes to the summit begin from nearby municipalities, with multiple starting points offering different path options and difficulty levels. Visitors should wear proper footwear, bring sufficient water, and check weather conditions before beginning their ascent.

At the summit stands an iron cross bearing three ants, a reference to the mountain's other name, Sant Miquel de les Formigues. The cross is set on the remains of a circular tower of Solterra Castle, and the ruins of the chapel of Sant Miquel de Solterra lie nearby, along with an old geodesic vertex marker (reference 298100002).