jhw – best coming towards the dam, more fun to be had that way… would be a a fair bit of ‘hike a bike’ going the other way.
as for the single track to Le Buet, again been up there… if there are some french os type maps on line somewhere I could point it out… the day I rode it was very wet and cold, the decent was not that steep but major tech in places, including some woodwork / nortshore style bridge structures that had seen better days… cracking trail… only ridden it the once mind… keep meaning to go back to that part of the valley… the climbs up to this lot are savage mind.
if a treverse ride is what you are after than try the Brevent to Flégère trail that is a cracker too. there is also a trail up by the glace du tour that looks tricky.
anyone got a link to some french maps.