Frontal Cordillera extends in a north-south direction in the province that borders what country on the west?
Frontal Cordillera: Frontal Cordillera (Spanish: "Cordillera Frontal" ) is a mountain range in western Argentina that forms part of the Andes. Frontal Cordillera:  It extends in a north-south direction in the provinces of La Rioja, San Juan and Mendoza. San Juan Province, Argentina:  It borders with Chile at the west.
Chile