Argentine and Chile have decided to build a railway tunnel through the Andes, which will directly link the Mendoza region in the mid-west of the Argentine with both states. An appropriate treaty was signed by the presidents of Argentine and Chile, Christina Kirschner and Michelle Bachelet in autumn 2009, which is part of an agreement dating back to 1994. The tunnel project will take some 8 to 10 years to construct and the necessary investments are earmarked at 3 bill. US$ (2.5 bill. euros). G. B.