Original: Martigny is located at a crossroad between Italy, France and Switzerland, one road linking this town over the Great St. Bernard Pass to Aosta (Italy), and the other one, over the col de la Forclaz to Chamonix (France).
Simplified: Martigny is located at the joining of Italy, France and Switzerland, one road linking this town over the Great St. Bernard Pass to Aosta (Italy), and the other one, over the col de la Forclaz to Chamonix (France).