Haute-Savoie
Haute-Savoie (; Arpitan: ''Savouè d'Amont'' or ''Hiôta-Savouè''; en, Upper Savoy) or '; it, Alta Savoia. is a department in the Auvergne-Rhône-Alpes region of Southeastern France, bordering both Switzerland and Italy. Its prefecture is ...
region
In geography, regions, otherwise referred to as zones, lands or territories, are areas that are broadly divided by physical characteristics (physical geography), human impact characteristics (human geography), and the interaction of humanity and t ...
in south-eastern
France
France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of overseas regions and territories in the Americas and the Atlantic, Pacific and Indian Oceans. Its metropolitan ar ...
Saint-Gervais–Vallorcine railway
The Saint-Gervais–Vallorcine railway (French: ''Ligne de Saint-Gervais-les-Bains-Le Fayet à Vallorcine''), also known as the Saint-Gervais–Vallorcine Line, is a single-track long metre gauge railway in France connecting the SNCF's Saint- ...
and the section between Les Houches and Servoz holds the world record gradient for an
adhesion railway
An adhesion railway relies on adhesion traction to move the train. Adhesion traction is the friction between the drive wheels and the steel rail. The term "adhesion railway" is used only when it is necessary to distinguish adhesion railways from ...