Natural lakes, known as kettles, were created when huge chunks of ice broke off the glacier and melted in depressions.
(Natural lakes; known; as kettles) (Natural lakes, known as kettles; were created; T:when huge chunks of ice broke off the glacier and melted in depressions) (huge chunks of ice; broke off; the glacier) (huge chunks of ice; melted; L:in depressions)
Natural lakes Natural lakes, known as kettles huge chunks of ice huge chunks of ice
known were created broke off melted
as kettles
T:when huge chunks of ice broke off the glacier and melted in depressions
the glacier
L:in depressions