Departamento de Pasco
Yana Mach'ay (Quechua "yana" black, "mach'ay" cave, "black cave", also spelled "Yanamachay") is a mountain in the Andes of Peru, about high. It is located in the Lima Region, Oyón Province, Oyón District, and in the Pasco Region, Pasco Province, Huayllay District.