The causal world is considered to be a blissful realm, transcending even thoughts of heaven. The causal world is sometimes referred to in Hindu teachings as Brahmaloka.
To exist in this plane, a soul will have complete awareness that they are a being of light. Although every other aspect of the self is retained, the manifestation of the physical body and the material environment become insignificant. Consciousness does not need any physical form in this existence.
Once someone has transcended the causal plane, they will have broken the cycle of rebirth and karma. In this state of being, they are in complete and eternal union with God, or Brahman