An ice-rock avalanche on August 26, 2026, near Mount Langtang Lirung on the Nepal-Tibet border, which resulted in over 1,000 deaths and significant destruction, was the result of a long geological process. Experts indicate the event was not sudden but a consequence of millions of years of tectonic pressure from the Indian plate colliding with the Eurasian plate, creating faults and weaknesses in the rock.
Glacial erosion over the last 10,000 years carved steep slopes, and subsequent glacial retreat removed supporting ice. Warmer temperatures and meltwater may have further weakened the rock. The avalanche involved a bedrock failure beneath the glacier, causing the ice and rock to collapse, melt, and form a fast-moving debris flow.
This event is one of several similar incidents in the Himalayas, including past debris flows and glacial lake outburst floods. Scientists emphasize that understanding the deep geological history of these landscapes is crucial for predicting and preparing for future disasters.
Source: Down To Earth