Tukumach'ay or Tuku Mach'ay (Quechua tuku owl, t'uqu a niche in the wall, mach'ay a cave, a niche in the wall Teofilo Laime Ajacopa, Diccionario Bilingüe Iskay simipi yuyayk'ancha, La Paz, 2007 (Quechua-Spanish dictionary) Hispanicized spelling Tucu Machay) is a mountain in the Andes of Peru, about 5000 meters high.