"The Ultimate Reality in Dzogchen is not considered to be the Absolute Truth, found in the other Buddhist schools, and represented as emptiness of both self and the phenomena. Dzogchen teachings acknowledge the existence of the two truths (absolute and relative) but state that the Natural State is represented by the single truth, known as one taste (ro gcig) or the unique essence (thig le nyag gcig). Natural state is beyond karmic causality and its effects. Appearances comprised of self and phenomena are the product of accumulated karma and they do exist on the level of relative truth. On the level of absolute truth, Dzogchen teachings acknowledge their emptiness, however, this is not the end state, since even acknowledging emptiness means grasping in order to understand it. In Dzogchen one does not grasps for either emptiness or for awareness. Similarly one does not grasp for apperances. Both emptiness and appearances dissolve in the Natural State, and, like the drops in ocean, have the single salty taste of the whole ocean itself."
Unfortunately I forgot the source of this nice quotation, though it comes for sure from a pdf book on dzogchen and Bon that I found online.