+The frost line is the maximum depth that the ground's [soil](/wiki/soil) is expected to freeze during winter. This critical depth informs [construction](/wiki/construction) practices, preventing damage to foundations and buried utilities from frost heave.
+## See also
+- [Permafrost](/wiki/permafrost)
+- [Groundwater](/wiki/groundwater)
+- [Freezing Point](/wiki/freezing_point)
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