
How about a last push of 3 km and 280 metres of ascent for a beautiful scenic view of the Mont Blanc massif?
At the time, the Col de Portette, then the Passage du Dérochoir following the landslide of 1751, were frequently used to trade alpine produce (cheese, quartz crystals, donkeys, horses) with the inhabitants of the Arve Valley and the European trade routes.
This means that Sixt-Fer-à-Cheval has never been isolated from the rest of the world!