Cerro Negro de Mayasquer is a volcano on the border of Colombia and Ecuador.

It lies 3 kilometres (2 mi) 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.

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