"Chuchunco City" is a generic name of an imaginary city
. According with data from GEONET
, it looks like it's somewhere around Rancagua
The name "Chuchunco City" is used in various popular sayings, often with the meaning "a place very far away". "Chuchunco" itself is used as a metasyntactic variable in some situations.
"Chuchunco City" is also the name of a crappy fighting game, developed by Luis González. You can download the current version at http://www.lgm.cl/software/ch-city/. It was tested in Linux/i386 and MS-DOS.