Thanks for attaching this one. The normal route goes right through the middle of the upper Gl. Calluqueo and can be seen directly in the middle of your picture.
Camp 2 is usually done in the center of the ice flank in the middle of the picture at a certain point where the flank becomes flat for some meters.
There is an alternative to the normal route that can be done with one camp in 2 days up and one day down = 3 days from Toni Rohrer hut (Agostini BC).
The camp can be reached in bad weather also, so only one "good day" is needed to summit.
I planned to go on that new route this new year but unfortunately my wife got very ill before X-mas so I had to cancel the whole expedition and stay in Germany.