In reply to vizik:
Two good ones I have done:
Park at prodains and take the lift to avoriaz. Walk up to the summit of les hautes forts: scrambling on the last section with cables, then take the ridge south west to the col (a few more cables) then head down through forests and meadows back to prodains: excellent!
Another one: par at the lac du min d'or then head for the pass de latte which is an easy scramble up to the bostan ridge. Scramble has lovely fluted sections and a fun chimney, all marked with paint. From the ridge gain the bostan summit then keep going to the col. Then head down the valley to the chardonniere hut for lunch and a beer 🍺 then back down to the mine d'or
One to avoid: one year I did the route of the hautes forts trail race which approaches the hautes forts from the col de coux. Never again! The narrow scree path with chains half pulled out of crumbling rock went on and on, interspersed with sections of running water and an encounter with a guard dog. Not recommended!