The victims were in their fifties. The accident happened when they were climbing the Charpoua glacier. They were trying to reach one of the shelters situated at the top of the glacier, rescue workers said.
The Belgians were hit by falling "seracs", big blocks of glacial ice. This phenomenon is seen more often in that area of the Mont Blanc. They were discovered during a helicopter reconnaissance flight this morning, after one of their rucksacks had been found yesterday. Another mountaineer had witnessed the accident on Thursday. This triggered the start of a rescue operation.