My first thought was to go over the col and drop down the other side then back around the lake to the col Cenis, where we had been a few days before. However plans changed during the day.
We drove down the road to Lanslebourg and got an early morning parking slot opposite the tourist information office.
We bought a once up ticket and moved over to the chair, waiting for it to open. We had considered skining all the way but did not think we could do all the height gain. 
At the top of the lift we moved over to the edge of the ski area and put the skins on and stripped off for the ascent.
The first section followed a track as it contoured around the nearest ridge end, gaining only a small amount of height.
Once round in front of the bowl we turned South and headed into the wilderness.
We followed a few tracks that had been made yesterday, but not very many people had been up here recently.
As we moved closer into the bowls that made up this hanging valley a few clouds started to gather on the tops.
we gradually worked our way up the bowls, getting closer to the col.
As we got into the final bowl the clouds were now down to the col, and we realised we should take care.
The final slopes up to the col, were the steepest section, but also in and out of cloud as they rolled in then moved off.
When we got to the col itself there was no respite , and the cloud stayed down.
The view was not great, and we could not see the descent down the other side so we decided t go back the way we had come up.
We knew the snow was brilliant powder from our ascent, so we set off to find fresh powder.
then more powder, and more powder.
then we found even more powder.This continued until we came out of the bowls.
Then we had the track, which was a like a rail track .... skis in the traces and head down.
We eventually popped out on the piste close to where we had started. The only disappointing part was that there was no sign of the clouds that had plagued the tops.
Next we dropped down the descent route back to the car, tired but elated...
Back at the apartment we could look out on the tops and see the clouds were back.This would be our last route this trip, as the front crossed over night and the next day was poor. So we headed back.