Starting point was a few kilometer forward from Lourtier. Because of low altitude and late spring, snow was melting quickly and proper path for skies was difficult to find. We used normal trekking route till Cabane Brunet. From Cabane the route continued beside Mont Petite Combin toward top ridge of Mont Rogneux. While getting at the height of 2750m, clouds came down and visibility was lost. We reached the top of mountain at 5:30 p.m. Wind raised and visibility was bad which forced us to wait at the top. Weather did not change any better. We ski down via north wall very carefully in mist.