PhotosPeople stand in the "Mill" at the Glacier 3000 ski resort in...

People stand in the “Mill” at the Glacier 3000 ski resort in Les Diablerets

People stand in the “Mill”, a 20m long natural ice cave created by melted water accumulated during the summer and by a siphon effect leaves in the autumn giving way to an ice cathedral, at the Glacier 3000 ski resort in Les Diablerets, Switzerland, December 10, 2020.