The HKH region spans Afghanistan, Bangladesh, Bhutan, China, India, Kyrgyzstan, Mongolia, Myanmar, Nepal, Pakistan, Tajikistan, and Uzbekistan.
It traverses about 5 million square kilometres and hosts a large and culturally diverse population.
It is considered the Third Pole (after the North and South Poles), and has significant implications for climate.
It contains vast cryospheric zones and is also the world’s largest store of snow and ice outside the polar region.
A recent report by the Intergovernmental Panel on Climate Change has highlighted the threat to the HKH region from global warming.
Floods would become more frequent and severe in the mountainous and downstream areas of the Indus, Ganges and Brahmaputra river basins, because of an increase in extreme precipitation events.
Also, the severity of floods is expected to more than double towards the end of the century