Cerro Macá, Stratovolcano in Aysén del General Carlos Ibáñez del Campo Region, Chile.

Cerro Macá is a glacier-covered stratovolcano north of the Aisén Fjord and east of the Moraleda Channel, built of basalt and basaltic andesite. Its partly eroded edifice reaches about 2,300 m, and glaciers covered 27.62 km² in 2011. Pyroclastic cones with lava flows lie on its southwestern flank, down to sea level and into Bahía Aysén.

Cerro Macá's MAC1 tephra was deposited by a moderate explosive eruption 1,440 ± 40 calibrated radiocarbon years ago, reaching 10–15 cm thick 70 km east of the volcano. Ash from past eruptions has been tentatively identified near Cochrane Lake. A more recent eruption came from the Bahía Pérez cinder cone on the southwestern flank 1560 ± 110 years ago, and in the early 20th century activity was observed at Ensenada Pérez.

The volcano lies in the Cisnes commune of Aysén Region, about 40 km from Puerto Aysén, and its name is shared with Ensenada Pérez and Bahía Pérez on its southwestern flank, where residents reported volcanic activity in the early 20th century. Five eruptive cones rise in a line toward the southwest.

Cerro Macá lies in the Cisnes commune of Aysén Region, about 40 km from Puerto Aysén, north of the Aisén Fjord and east of the Moraleda Channel. No records of historical activity exist, but the volcano is considered active and could produce explosive eruptions if reactivated. Approach from the Puerto Aysén side and watch for ice on the summit cone.

The summit area features a large steep-sided depression created by a sector collapse, while pyroclastic cones dot the southwestern flank. These formations tell the story of complex volcanic processes that shaped the mountain's distinctive profile.