Martigny to Orsieres – 20km: This is described by some authors as the most challenging section of the entire VF! We considered it to be the most demanding section from Lausanne to Pont Saint Martin. This is a day of steep climbs and descents and need navigating narrow path and switch backs which I found the hardest of all! There is a section where chains provide help and a footbridge has been constructed which takes away much difficulty. I did not find this part hard but I was with company who provided me with great support and confidence. All part of a Camino experience. We did not complete the last 8km of this section as we ran out of time and took the train from Sembrancher to Osiers.