ELI5: Explain Like I'm 5

Subterranean London

Hello there! Today we are going to talk about something called Subterranean London.

So, imagine you are walking on the streets of London and suddenly you notice that there is something very strange happening. You can hear a train passing beneath your feet and feel its vibration. Well, my dear child, that's because London has something very special: a whole network of tunnels and passages located underneath the city!

These tunnels are called subterranean or underground tunnels. Some of them were built a long time ago, while others are recently constructed. The oldest tunnels are about 200 years old and were built to transport coal from mines to the surface. Later on, more tunnels were dug to create the London Underground, which is the famous subway system that runs through the city.

The subterranean tunnels are not just for transportation, there are many other things there, too. They are used as storage areas, for sewage systems, and even as air-raid shelters during the Second World War. It is like there is another city hidden beneath the streets of London!

But, why are there tunnels beneath the city? Well, London has been around for more than 2000 years, and over time, it has expanded and grown bigger. To keep up with the growing population and their needs, new infrastructures were built. But, sometimes there is just no space! So, planners found a way to make use of the space underneath the city: by building downwards.

Overall, subterranean London is a fascinating and unique place. Who knows what secrets and treasures are hidden beneath the ground?