Park on the side of the road at the place called Surier. Head for Valgrisenche a mountain village that you'll reach from Arvier in the Aoste valley. In Valgrisenche, take the road towards Bohne which then overlooks Beauregard Lake's left bank. At a junction at the end of the lake take a left down a windy lane leading to Surier, then Usselières.
(S/E) Take the large path heading south towards Refuge Mario Bezzi (sign). The path heads slightly uphill along the right bank of Doire de Valgrisenche (Dora di Valgrisenche on the Italian map). To the right hand side (so the river's left bank), the slope then becomes steeper, heading down with several torrents that supply Doire River crossing through it. After a while the path twists and turns before heading up the slopes along the right bank. The slope then gets easier. Keep heading south reaching the refuge.
(1) Go past the refuge heading down to ford the river which is in a south-north direction. Follow a trail leading to a torrent which heads due west-east.
(2) Ford the torrent. Start a steep hike uphill along the edge of the moraine, heading west. The terrain is mineral and the windy path sometimes demanding but without any real technical difficulty. Get to the ledge with Lac du Vuert behind it.
(3) Backtrack for the way down.