Perhaps a clue: Swissie could pass this in, it may be a starter for 10, assuming this is where her car was found.
From the French entree forum on 1st October.by Carol.
As for being a little old lady....... I would like to take some of you on the walk I did last week, starting from Jourdy, near Mieussy in Haute Savoie, up to Roche Palud, six hours with a 1700' climb, descending on a zig-zagging path about two feet wide, down a sheer cliff face with a huge unfenced drop on one side. Luckily, there was a steel rope bolted into the rock face to hold on to. I wasn't nervous, but the corners needed care as I had to change hands on the steel rope!
and on 8th October.
I am very fit, able to climb 1700' in a couple of hours