Ngozumpa Glacier in Nepal snakes away from the sixth highest mountain in the world, Cho Oyo. It's not the greatest glacier to look at - far from it. It's smothered in a layer of rocky debris that's fallen from the surrounding cliffs, giving it a very grey, dirty appearance.
"Groundwater depletion will soon be as important a factor in contributing to sea-level rise as the melting of glaciers other than those in Greenland and Antarctica, scientists say."