London Clay

London clay is a type of dirt that you can find in London, which is a big city in England. It's a special kind of dirt because it's really old, like even older than your grandparents! It was made a super long time ago when dinosaurs were still around.

London clay is really important because it's used for building things like houses, bridges, and even tunnels for trains. It's really strong and can hold a lot of weight, like when lots of cars drive over a bridge.

Sometimes, when it rains a lot, the dirt can get really muddy and slippery, so people have to be careful when they walk on it. This is why they put down things like pavement and asphalt to make it easier to walk and drive on.

So next time you're walking around London, you can remember that the ground beneath your feet is actually really special and has been there for a very long time!