What could cause rocks to split and break greatly changing the landscape of a region?

Rocks can split and break due to various geological processes, including weathering, erosion, and tectonic activity. Physical weathering, such as freeze-thaw cycles, can cause water to seep into cracks, freeze, and expand, leading to fragmentation. Chemical weathering, which alters the mineral composition, can also weaken rocks. Additionally, seismic events like earthquakes can exert stress on rock formations, causing them to fracture and reshape the landscape.