Firstly, when the tracks are made, the foundation is of the Sleeper, which is made of a long iron plate.

The Sleepers are laid on small stones.

These small stones are called blasters.

The soil beneath the blasters has two layers.

Which is why the train track is above the ground surface.

These blasters, Sleepers and stone bear the weight of a heavy train to keep it on the path.

These sharp stones control the quakes or shaking that happen because of a heavy train.

These stones do not let unwanted plants grow on the track.

Because these stones build the train track, it gives a decent height to a train trail to preserve it from floods.