Very beautiful hike in the Haute - Savoie region. You will be rewarded with great views of the tallest mountains in the region and if the weather is nice, even Mont Blanc.
Park your car at Musée Départemental de la Résistance de Morette, Nécropole des Glières, from the parking lot (facing car) go left until you reach a map showing the whole hike. It's in English and will tell you exactly where to go. Be aware, the hike is pretty intense as 90% is going steep up the hill. It took us 7 hours up and down, with 4,5 hours up and 2,5 hours down.
Except the views, you will also see local fauna - marmoths, chamois, hawks, etc. Really interesting hike.