Hochvogel mountain at risk of major collapse as 400,000 cubic metres of rock threatens to break away
The Hochvogel sits on the border between Germany and the Austrian region of Tyrol. It is part of the Allgäu High Alps and stands at 2,592 metres high.
In June, approximately 2,000 cubic meters of rock dislodged from Hochvogel mountain in the Allgäu Alps. Researchers now warn of an impending larger collapse, potentially ejecting up to 400,000 cubic meters of rock debris. The summit is particularly vulnerable, with a fissure that has widened from a few centimeters to several meters in width since the 19th century.
Scientists have been tracking this hotspot for twelve years, with recent measurements showing movement rates up to five millimeters per week. This rapid movement is atypical for the Alps, which normally shift by about 1.8 millimeters annually. The Hochvogel straddles the German-Austrian border and stands at 2,592 meters tall, with its German side remaining open for climbers.
In October, geology professor Michael Krautblattler from the Technical University of Munich inspected the mountain, noting the critical condition of the terrain and sensors. Over 30 sensors on the peak monitor movements to the millimeter, documenting the mountain's behavior. A new crack on the southwest ridge, dubbed "Fissure 6," is identified as a key weak point, recording the highest rates of movement.
Researchers believe the mountain may have reached a critical stage, with a potential collapse of between 250,000 and 400,000 cubic meters of debris. Extreme weather events, exacerbated by climate change, are also contributing to the increased movement. Only two other locations - the Partnach Gorge and Höllental Gorge - have similar early-warning systems in place, which provide crucial insights into the mountain's behavior.
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