Structural Geology is the study of the three-dimensional distribution of rock units and their deformational histories. It focuses on understanding how rocks are shaped and altered by tectonic forces, which can lead to the formation of features like faults, folds, and mountain ranges. Geologists analyze these structures to interpret the Earth's history and predict geological hazards. By examining the orientation and relationships of rock layers, they can gain insights into past geological events and the processes that have shaped the Earth's crust over millions of years.