Well, when a horse passes away, sometimes people want to show how much they loved and cared for the horse by giving it a proper final resting place. This is called a horse burial.
First, the horse's body is cleaned and prepared for burial. Then, a hole is dug in the ground where the horse will be placed. The hole is usually pretty deep so that the body is well covered.
After the hole is dug, the horse is placed inside and covered with dirt. Sometimes people put a marker or a special rock on top of the grave to remember their horse.
Horse burials are a way for people to honor and remember their beloved horses even after they have passed away.