In the Himalayas, where glaciers have for centuries held vast masses of water in a fragile balance, a recent catastrophe in Nepal laid bare the vulnerability of an entire region. Three weeks ago, the collapse of a glacier triggered powerful floods that claimed the lives of more than eight thousand people in Nepal and China. Now experts are raising the alarm: similar events could recur in the eight countries whose territories the mountain range crosses.
The Himalayas and the adjoining Hindu Kush range span Afghanistan, Bangladesh, Bhutan, China, India, Myanmar, Nepal and Pakistan. Around forty thousand glaciers are concentrated here. According to a report by the consulting company Systemiq, only twenty-one of them are actively monitored. Melting ice and thawing permafrost are intensifying the threat of landslides, glacial lake outbursts and river floods capable of washing away entire settlements.
Cryosphere researcher Miriam Jackson emphasises the need for data exchange between countries. "We will see more and more such events," she notes. "The cryosphere is changing very quickly, and more and more people are living close to the dangers." Without joint monitoring and early warning systems, the consequences could prove even more devastating.
History shows that mountain rivers recognise no state borders. A flood that begins in one country can inundate valleys in neighbouring ones. In Nepal, the Trishuli River after the flooding left behind destroyed homes and fields, a reminder of how closely the region's ecosystems are interconnected. The analogy is simple: glaciers are like old dams that are gradually losing their strength, while people live ever closer to their foot.
Experts propose concrete steps: strengthen glacier monitoring, establish real-time information sharing and develop evacuation plans. Such measures have already helped in other mountain regions of the world, where joint efforts reduced the number of casualties. In the Himalayas, however, political and logistical barriers still stand in the way of full-fledged cooperation.
Evidently, without coordinated action the risks will grow. Preliminary data point to an acceleration of ice melt, and this affects not only mountain villages but also millions of inhabitants of the plains who depend on rivers that originate in the Himalayas.
One of the most reliable defences is the timely exchange of knowledge between the countries that share these mountains.
