During my first attempt to realize this panorama, I told myself that I had to retry it by trying to clear up the two massifs. It's not an easy thing at 100 meters deep and against the light. So I push the ISO, pushed the power of my flash thoroughly hoping to light the walls. I also counted on the help of the lighthouses of my teammates. Here is the result of the assembly of the 9 photos that make up this panorama. An atmosphere less dark than the first attempt, a much more present sun because of the great sensitivity used. But I am still satisfied with the result. I did not get 140 minutes of DTR for nothing.