When a person passes away, sometimes they choose to have their body put into the ground with no chemicals or artificial things. This is called a natural burial. It's like planting a seed in the ground and letting it grow naturally without adding anything that might change the way it grows.
The body is usually wrapped in a simple cloth, like a big sheet, and placed in a hole in the ground. Sometimes the hole is dug up by hand instead of using machines that are louder and might cause damage to the environment.
Instead of having a big, fancy tombstone to mark the spot where the body is buried, a natural burial might have a small stone or no stone at all. The idea is to make it look like the body is just a part of the natural environment around it.
This type of burial is often chosen because it is better for the environment. It helps to preserve the natural resources and reduce the amount of pollution that can be caused by traditional burial methods. Plus, some people find comfort in the idea of returning to the earth in a very natural way.