Ancahuachana or Mama Rosa is a mountain in the Vilcanota mountain range in the Andes of Peru, about 5,100 metres (16,732 ft) high. It is situated in the Cusco Region, Quispicanchi Province, in the districts of Camanti and Marcapata. Ancahuachana lies northeast of Singrenacocha and east of Colquepunco.