Reuters report on this:
“A deluge of millions of cubic meters of ice, mud and rock crashed down a mountain on Wednesday, engulfing the village of Blatten and the few houses that remained were later flooded. Its 300 residents had already been evacuated earlier in May after part of the mountain behind the Birch Glacier began to crumble.”
“Its 300 residents had already been evacuated earlier in May after part of the mountain behind the Birch Glacier began to crumble.”
Yep, there is a large debris field at the bottom of the mountain that is seen in the video BEFORE it gets hit by this avalanche or whatever they are calling it.