· Forest degradation
· Road construction
· River and stream erosion
When glaciers recede, they leave behind debris called terminal moraine. However, vast areas are left open by these retreating glaciers, which tend to remain barren for a considerable period of time. There is large-scale erosion, more so during this period as the erosive power of the morainic material is more than that of the moving body of ice.
Moraines may block the passage of the meltwater, act as dams and form morainal (glacial) lakes. Many lakes in the Trans Himalayan regions trace their origins to the glaciers. There are many beautiful glacial lakes in the Nepal Himalayas such as Tilicho Lake, Rara Lake and Gokyo Lake.
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