Ch'iyar Qullu (Aymara ch'iyara black, qullu mountain,[3] "black mountain", also spelled Chiar Kkollu) is a volcanic centre in Bolivia.

It is located in the Oruro Department, Ladislao Cabrera Province, Salinas de Garci Mendoza Municipality, northeast of Salinas de Garci Mendoza, near a maar named Jayu Quta ("salt lake").

[4] It is a sill formed from primitive phyric alkali basalt that closely resembles ocean island basalt in composition and now appears as a hill.

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