One of these days I will bother to upload some video footage of the descent and put it here...
The first half of the descent was spent traversing off the strangely named Glacier des Glaciers. It is a good glacier, but if you ride it to the bottom then you end up in the wrong valley and in France, which means that the heli will not be able to pick you up. We traversed east above col de la Seign and looked for better snow on the north flank of the Pyramids Calcairs. These little peaks stick out of the upper side of the valley. There is often ok snow in the protected northerly side of the ridges but not this day. Although better, it too had been blasted by the wind. The riding surface was breakable wind crust with intermittent sections of dimpled softer snow. From this point we were almost back at our collection point near Lac Combal. Along the route, on a ridge up hill from the Pyramids, there was an old rock and cement bunker that still had rusting barbed wire on the ground around it. I have never seen farmers use barbed wire in the Alps and certainly not up so high and placed around what looked like a military bunker. It turned out to be the remains of a military gun post from WW2. I was amazed that the wire, although very rusted, had lasted so long. The position was high on the flank of Val Veni and could se east and west along the valley. To the west is col de la Seigne which forms the boarder between Italy and France. This col and the valleys each side were likely good strategic approaches around the south western corner of the Mont Blanc obstacle. In fact, the famous Tour de Mont Blanc hiking path runs over the col. This would have been valuable ground for an force moving from France into Italy as the only other way was via Switzerland or much further south, entering Italy below Torino.
Another interesting feature of the area is a small pocket high on Glacier de glaciers. On the map it looks like a icy cove on the rocky upper western edge of the glacier. It is called col du moyen age, which I think was supposed to have held in the glacial ice evidence of human activity from the middle ages.
This was the first time I had been in the Val Veni, a great spot which gives access to the entire south and south west quadrant of the Mont Blanc massif. Lots of touring and riding is possible from here, particularly if you hike up the peaks from the valley and then drop over into the more northerly facing slopes into France.
[Mont Blanc guide for skiers, reference #24]