Fiber-optic cable reveals hidden crevasses that could destabilize glaciers

In recent years, the Alps have experienced devastating glacier collapses: In September 2023, a section of the Marmolada glacier in the Dolomites collapsed, resulting in the deaths of seven mountaineers. Just over a year and a half later, in May 2025, the Birch Glacier above Blatten collapsed, keeping Switzerland and the entire world in suspense.

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