Geological formation is like building a sandcastle at the beach, but much bigger and over a really long time. Imagine you have a big pile of sand and you start to shape it into a castle with your shovel and bucket. Over time, you add more sand and maybe some water to make it stronger. The wind and waves might also affect the castle, making it bigger or changing its shape.
Now, imagine that the sandcastle is actually a big rock or mountain, and it's not just you building it but the Earth doing it all by itself. It takes millions of years for the Earth to make these big rocks and mountains, and it happens in many different ways. Sometimes, hot magma deep inside the Earth rises up and cools into solid rock, forming a new mountain. Other times, layers of sediment (like sand, mud, and rocks) pile up over time and get compacted into solid rock.
Geological formations can also be shaped by earthquakes, volcanoes, glaciers, wind, and water. For example, a glacier might move slowly over the land and carve out a valley over thousands of years. Or, a river might erode the land and create a canyon. Each geological formation is unique and tells a story about how it was formed over millions of years.