rang thog bltas pa

Formless Realms (gzugs med kyi khams). The abodes of unenlightened beings who have practiced formless meditative states, dwelling on the notions: Infinite Space, Infinite Consciousness, Nothing Whatsoever, and Neither Presence Nor Absence (of conception). These beings remain in these four subtle types of conceptual meditation for many aeons after which they again return to lower states within samsara. [RY]