Map key Overview map Route summary table Introduction Geography Geology Wildlife Plants and flowers Weather History Art and culture Trail running Places of interest When to go Access and travel Accommodation Clothing Food and drink Language Maps and navigation Waymarking Safety and emergencies Insurance Using this guide Main Valley Route 1 Forte di Bard and the Roman road, Donnas Route 2 Napoleon's diversion route Lower Lys Valley Route 3 Plan des Sorci&##xe8;res and Col Portola Route 4 The Two Monts: Mont Roux and Mont Bechit Route 5 Colma di Mombarone Route 6 Mont Mars traverse Upper Lys Valley Route 7 Via Regina to Castel Savoia Route 8 Punta Regina: the queen's peak Route 9 Alpenzu and the Walser villages Route 10 Source of the Lys Route 11 Punta Indren and Indren glacier crossing Route 12 Bettolina ridge to Rifugio Quintino Sella Valtournenche and Cervin/Matterhorn Route 13 Eastern balcony: Cervinia to Valtournenche Route 14 Western balcony: Cervinia to Valtournenche Route 15 Becca d'Aran Valpelline Route 16 Rifugio Prarayer Route 17 Ru di-z-Aagne and Fontina Route 18 Lac Mort Route 19 Ru du Rey: a marvel of hydro-engineering Route 20 Pointe Cornet Route 21 Alta Via 1: Col de Breuson Route 22 Rifugio and Col Champillon Great Saint Bernard Pass Route 23 Via Francigena to Great St Bernard Monastery Route 24 Mont Fourchon Route 25 Two Cols Route 26 Grande Chenalette and Pointe de Drône via ferrata Upper Aosta Valley - Courmayeur Route 27 Mont Ch&##xe9;tif Route 28 Mont de la Saxe and Col Sapin Route 29 Rifugio Bonatti and Mont Blanc panorama Route 30 Mont Fortin Route 31 Tour of the Pyramides Calcaires Route 32 Mont Ch&##xe9;tif via ferrata Appendix A Useful contacts Appendix B Useful phrases Appendix C Clothing and equipment.