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kettle hole| Pit or depression formed when a block of ice from a receding glacier becomes isolated and buried in glacial debris (till). As the block melts the till collapses to form a hollow, which may become filled with water to form a kettle lake or pond. |
| Kettle holes range from 5 m/15 ft to 13 km/8 mi in diameter, and may exceed 33 m/100 ft in depth. |
| As time passes, water sometimes fills the kettle holes to form lakes or swamps, features found throughout much of northern North America. Lake Ronkonkoma, the largest lake on Long Island, New York, is an example. |
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