+A **Fault Line** is a planar fracture or discontinuity within the Earth's [Crust](/wiki/crust), where blocks of rock have moved relative to each other. These zones define boundaries where [Tectonic Plates](/wiki/tectonic_plates) meet and slide, often releasing built-up stress as sudden ground movement, known as an [Earthquake](/wiki/earthquake).
+## See also
+- [Seismology](/wiki/seismology)
+- [Plate Tectonics](/wiki/plate_tectonics)
+- [Geology](/wiki/geology)