Meltwater from retreating glaciers fills basins and creates new lakes.
Notes on verification
Well-established glaciology confirmed by multiple independent scientific sources including NSIDC, Britannica, and AntarcticGlaciers.org.
Sources
- Ice Age - Definition & Timeline (history.com)
- https://nsidc.org/learn/ask-scientist/what-are-glacial-lakes (nsidc.org)
- https://www.antarcticglaciers.org/glacier-processes/glacial-lakes/introduction-to-glacial-lakes/ (antarcticglaciers.org)