In Dzogchen ground is the primordial state. It is an essential component of the Dzogchen tradition. Knowledge of this Ground is called rigpa. Beings are trapped in samsara by not recognizing the ground.
“Guru” means teacher, “yoga” means having knowledge or understanding of one’s own authentic state, the essential condition in which there is nothing to change or modify. We are not judging and thinking. This is the state of the guru. Guruyoga is, then, the main element in the practice of Dzogchen.