Astonishing new footage shows the moment a Swiss village was buried by a collapsing glacier yesterday, leaving homes in ruin and one person missing.

Video shows a huge cloud of ice and scree spewing over the village of Blatten on Wednesday, dwarfing tiny Alpine lodges as a chunk of the Birch glacier broke off.

Mud and rockfall hit homes as debris hurtled down the mountain slope and into the valley where the village was built.

Some 90 per cent of the commune, usually home to some 300 people, was covered by the resulting landslide, with one person still missing, officials said.

'The unimaginable has happened,' Blatten's president Matthias Bellwald told a press conference. 'We have lost our village, but not our hearts.'