Riti Urmasca or Ritiurcamasca (possibly from Quechua rit'i snow, urmasqa fallen down, Teofilo Laime Ajacopa, Diccionario Bilingüe Iskay simipi yuyayk'ancha, La Paz, 2007 (Quechua-Spanish dictionary) "snow fallen down") is a mountain in the Andes of Peru, about 5200 meters high.