The "machine à coudre" path (sewing machine)

There are 2 options :
1. Down by the "Puy" to reach La Paute. A very very technical path, call'd the sewing machine : planned route here.
Don’t try it if you don’t qualify!
2. Or follow the path on the right to reach Bourg d'Oisans. Pass under the cliff Prégentil on a balcony path more accessible. You arrive behind the gymnasium of Bourg d'Oisans.