In reply to pneame:
Hi, yes the ladders have been removed as of 2016. The path still exists above. There is a new semi equipped approach that starts higher up the glacier and joins this path, hence why it is on the map. It is a useful direct approach if climbing on the Flammes des Pierre or wanting to access the West Face of the Dru. Otherwise the standard approach via the Charpoua ladders is best for most other routes in the basin.
Yes, this summer was the last summer for the old cabin and they are building a new one in the same spot and same style in 2023.