Blatten was first mentioned in a deed of 1343 as
uffen der Blatten. The Fafleralp above the village area has been a tourist attraction since 1910. The village was connected by paved road in 1954 and thenceforth residents turned more and more to jobs in the industrial and service sectors and the population also declined somewhat.
2025 glacier collapse On 28 May 2025, at 15:24
CEST, approximately 90% of Blatten was destroyed by a landslide due to the collapse of the Birch
glacier. The glacier collapsed because priorly a massive rockfall from the Klein Nesthorn mountain had brought down over 10 million tons of weight onto the glacier, increasing pressure and stress on the ice massively. A seismic signal equivalent to a
magnitude 3.1 earthquake was recorded at the moment of the landslide. An area approximately long, wide, and deep was buried by the debris cone, extending on both sides of the valley. An estimated of ice, earth, and rock blocked the
Lonza River, forming a lake. Smaller landslides in the preceding weeks had led to the partial evacuation of the village on 17 May 2025 and then a full evacuation of the remaining residents on 19 May 2025, thus preventing mass loss of life. A shepherd tending to his sheep was reported to be missing and later confirmed to have perished.
Reconstruction plans A "New Blatten" working group was established by the local government. As reconstruction at the current site was complicated due to the sheer volume of debris and difficulty of removing it and disposing of it elsewhere, consideration was also being given to rebuilding at another location in the Lötschental. However, following contributions from the public, the canton, and the federal government, clean up of the site had begun by later in 2025. ==Geography==