Geological formations are unique and distinct rock formations that have been created over millions of years through various geological processes such as erosion, weathering, and tectonic activity. These formations can be found all over the world and provide important insights into the Earth's history, climate, and changes over time. Geologists study these formations to better understand the Earth's past and predict future geological events. Examples of geological formations include mountains, valleys, caves, canyons, and rock layers.