What happened to old majors skull in chapter ten In animal farm?

In Chapter Ten of "Animal Farm," Old Major's skull is displayed at the base of the flagpole as a symbol of the farm's revolutionary ideals. It is treated with reverence, serving as a reminder of the original principles of Animalism. However, by this point in the story, the pigs have significantly altered the farm's governance and ideals, undermining the very values Old Major stood for. The display of the skull thus becomes a poignant symbol of the betrayal of those revolutionary ideals.