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
Glacial erratic boulders of Estonia believed they had been carried by icebergs. However, in the following years of the 19th century the glaciation theory slowly gained the ascendancy. Glacial erratic boulders of Estonia Glacial erratic boulders of Estonia are large boulders of rock which have been formed and moved into Estonia by glacial action during previous ice ages. Before the takeover of Estonia by the Soviet Union, these large boulders were a symbol of national identity. They are now registered and protected by the Estonian government. These boulders are found in especially large quantities in Estonia. Most of the boulders greater than in circumference found