Killa Mach'ay

{{short description|Archaeological site in Peru}}

{{Infobox ancient site

| name = Killa Mach'ay

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| location = Peru

| region = Huancavelica Region, Acobamba Province

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| height = {{convert|3400|m|ft|0}}

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Killa Mach'ay (Quechua killa moon, mach'ay cave,{{Ref Laime}} "moon cave", also spelled Killa Machay, Killamachay, Quillamachay) is an archaeological site with rock paintings and petroglyphs in Peru. It is situated in the Huancavelica Region, Acobamba Province, Acobamba District. The site consists of caves with images of llamas, lines and people. It is situated at a height of {{convert|3400|m|ft|0}}.{{cite web|url=http://www.mincetur.gob.pe/TURISMO/OTROS/inventario%20turistico/Ficha.asp?cod_Ficha=4281 |title=Pinturas Rupestres de Quillamachay |publisher=mincetur |access-date=August 22, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20160304103735/http://www.mincetur.gob.pe/TURISMO/OTROS/inventario%20turistico/Ficha.asp?cod_Ficha=4281 |archive-date=March 4, 2016 }}