Chilcayoc Grande (possibly from Quechua ch'illka baccharis, -yuq a suffix to indicate possession, the one that has got baccharis or the one with baccharis, Spanish grande large) is a volcano in the Andes of Peru, about high. It is situated in the Valley of the Volcanoes in the Arequipa Region, Castilla Province, Andagua District. Chilcayoc Grande lies south-west of the Chachas Lake and south-east of the volcanoes Chilcayoc and Jechapita (3,388 m).