Around 2,000 cubic metres of rock broke away from the Hochvogel mountain in the Allgäu Alps in June. Now researchers are warning that another major collapse could be imminent, potentially sending up to 400,000 cubic metres crashing down the mountainside.
The summit itself is at risk of breaking apart, with a fissure that has existed since the 19th century steadily widening. Records suggest the crack was once about shoulder-width, but the gap is now several metres across.
