Ch'iyar Qullu (Aymara ch'iyara black, qullu mountain, 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).