Yana Mach'ay (Quechua yana black, mach'ay cave,[2] "black cave", also spelled Yanamachay) is a mountain in the Andes of Peru, about 5,000 m (16,000 ft) high.

It is located in the Lima Region, Oyón Province, Oyón District, and in the Pasco Region, Pasco Province, Huayllay District.

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