Proglacial lake
Lake formed by the action of ice / From Wikipedia, the free encyclopedia
In geology, a proglacial lake is a lake formed either by the damming action of a moraine during the retreat of a melting glacier, a glacial ice dam, or by meltwater trapped against an ice sheet due to isostatic depression of the crust around the ice.[1] At the end of the last ice age about 10,000 years ago, large proglacial lakes were a widespread feature in the northern hemisphere.
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/0/02/Schoolroom_Glacier_from_Hurricane_Pass.jpg/640px-Schoolroom_Glacier_from_Hurricane_Pass.jpg)