Yuraq Kallapu (Quechua yuraq white, Aymara kallapu stairs close to the walls, step of the stairs in a mine; buttress, wood to prop up, possibly meaning "white stairs", hispanicized spelling Yuraccalapo, Yurajalapu) is a mountain in the Wallanka mountain range in the Andes of Peru which reaches an altitude of approximately 4800 meters .