Cayco (possibly from Quechua for a type of hunt) is a mountain in the Vilcabamba mountain range in the Andes of Peru. It is situated in the Cusco Region, La Convención Province, on the border of the districts of Santa Teresa and Vilcabamba. Cayco lies southwest of Choquetacarpo and northeast of Pumasillo and a lake named Pumasillococha (possibly from in the Quechua spelling Pumasilluqucha).
References
Daniel A. de Lamo, Camélidos Sudamericanos, Ministerio de Agricultura, Buenos Aires, 2011 escale.minedu.gob.pe - UGEL map of the La Convención Province 1 (Cusco Region)