1Have you ever wondered why they put crushed rocks on railroad tracks?
2These stones under the tracks are called ballast.
3Ballast is material that is used to provide stability to a vehicle or structure. And the wood sleepers keep a firm hold of the rails.
4The stones also keep the rail tracks in place and help prevent the wooden beams from sliding.
5They also raise the ground, and prevent the rails from getting flooded, by draining the water.
Plus, they prevent the growth of weeds and any kind of vegetation that would interfere with the correct functioning of the rails. So, as you now know, they are exteremely important!