Glacial lake Glacial lake A glacial lake is a lake with origins in a melted glacier. They are formed when a glacier erodes the land, and then melts, filling the hole or space that it has created. Near the end of the last glacial period, roughly 10,000 years ago, glaciers began to retreat. A retreating glacier often left behind large deposits of ice in hollows between drumlins or hills. As the ice age ended, these melted to create lakes. This is apparent in the Lake District in Northwestern England where post-glacial sediments are normally between 4 and 6 metres deep. These lakes
Fluvio-glacial These hills can range in size and be up to 50 m tall and 400 m wide. A kame terrace is a relatively flat surface of sediment that was deposited between the valley surface and the glacier. When kames, kame surfaces, and other fluvio-glacial landforms are combined into one landscape, it is called a kame complex or glacial karst topography. Kettle holes are typically formed when a chunk of ice that came from the glacier is buried under fluvio-glacial sediments. Once the ice melts, the sediments fall and form a depression that can later be filled with rainwater and form