I go with a rad crew up to the Aguille du Midi in Chamonix then snowboard down the Valle Blanche. Amazing landscapes, just huge mountains with needle sharp peaks. #chamshack
My Mavic performed flawlessly at the altitude (3800m, 12800ft) and the cold temps(-10) It fits into my backpack with a Canon 5d, 3 prime lens and all my safety gear(shovel, crampons, probe) plus water bottle and lunch snacks. Very happy with it for over a year now.