Authorities in southern Switzerland are on high alert as concerns grow over potential flooding along the Lonza River following the collapse of the Birch Glacier earlier this week.
A massive avalanche of rock and ice swept down into the Lötschental valley, burying much of the Alpine village of Blatten under mud and debris. Officials report that 90% of the village has been destroyed.
The collapse caused debris to fill the bed of the Lonza River, creating a dam and causing a lake to form upstream. Officials warn that if the dam gives way, the resulting surge could flood communities downstream.
Authorities have begun dismantling pedestrian bridges and reinforcing critical infrastructure to prepare for possible flooding in Gampel and residents have been advised to arrange emergency accommodation in case of evacuation.
"I didn't sleep last night," one woman told reporters. "We were constantly waiting - if something happens, we have to go."
To mitigate the risk, authorities have emptied the Ferden dam downstream, hoping it can absorb some of the potential overflow if there is a breach.
The Swiss army has been deployed to the region but is currently unable to conduct ground operations due to ongoing instability.
In Blatten, the devastation is extensive. Aerial footage shows homes submerged in thick mud, with roads and structures either buried or swept away.
Authorities had evacuated more than 300 people, as well as livestock, from Blatten village as a precaution earlier this month, but one man remains missing following the incident.
However, local police say the search and rescue operation has been temporarily suspended because of falling debris.
President Karin Keller-Sutter visited the region earlier on Friday.
