| Cerro Negro de Mayasquer | |
| Elevation M: | 4445 |
| Elevation Ref: | [1] |
| Listing: | Volcanoes of Colombia |
| Range: | Central Ranges Cordillera Real Andes |
| Map: | Ecuador |
| Coordinates: | 0.8275°N -77.9644°W |
| Type: | Andesitic stratovolcano |
| Age: | Pleistocene |
| Volcanic Belt: | Northern Volcanic Zone, Andean Volcanic Belt |
| Last Eruption: | July 1936(?) |
Cerro Negro de Mayasquer is a volcano on the border of Colombia and Ecuador. It lies 3km (02miles) north-west of the volcano Chiles, and the two peaks are considered part of the same Chiles-Cerro Negro volcanic complex. These volcanoes, together with Cumbal are andesitic in rock type.[2] A 1936 eruption reported by the Colombian government agency INGEOMINAS may have been from the Ecuadorean volcano Reventador, otherwise the volcano has not erupted for around 160,000 years.[1]