KATHMANDU, May 28 (IPS) - In this explainer, IPS looks at GLOFs and the danger they pose to communities when many of the 54,000 glaciers in the Hindu Kush Himalaya (HKH) region are getting smaller due to climate change. Phu Chhettar Sherpa, who worked as an icefall doctor (a Sherpa who fixes ropes for climbers) for seven years from 2015 to 2021 on Mt. Everest, vividly recalls his fear of possible flash floods after the huge earthquake in Nepal in 2015.