The link between the main station and the classification yard of La Praille already exists ; from there , the line will go mostly underground to the Hospital and Eaux-Vives , where it will link to the existing line to France .
The link between the main station and the classification yard of La Praille already exists ; from there , the line will go mostly underground to the Hospital and the Eaux-Vives , where it will link up to the existing line to France .