To play this mission you have to hike up to the Becs de Bossons cottage at 2900m altitude. And then you have only reached the starting point. It's actually a pretty short mission but it involves climbing up the 3150m rocky summit of the Becs de Bossons. But before you can do that you must first answer one little question... Every checkpoint in this mission has been recorded using the GPS Mission client as a waymark. So I am sure that you will have cell phone reception due to the marvels of Swiss engineering!