Tata Ch'iyar Qullu (Aymara tata father, lord, sir, ch'iyara black, qullu mountain, Ref Bertonio "Father Black Mountain", also spelled Tata Chiar Khollu) or just Ch'iyar Qullu (Charkkollu) (Charkkollu) is a mountain in the Bolivian Andes, about 4800 meters high.