A group of naked people lying on the ice in front of an ice crevasse, around 600 people are posing for Spencer Tunick and Greenpeace on the Aletsch Glacier to protest about climate change, Aletsch Glacier, Valais, Switzerland

full frame europe adults people mountains caucasian appearance ice protest men landscape crowd nature crevasse wallis large group of people travel demonstration european alps scenics women day switzerland valais lying european ethnicity outdoors travel destination canton of valais glacier naked aletsch glacier person mountain