Just channeling about this formation and heard that its 4 states of being, or aspects of consciousness, moving outward. The three smaller ones represent our "thinking, feeling and willing", and the three lower chakras, while the larger, 4th one, represents ascension, and the union of all three from a CONSCIOUS CREATOR perspective, and the heart chakra.
I heard that people basically fall into three catagories of what they are dominated by, or governed by in separation consciousness, either thinking, feeling or will dominant. Now we have the choice to choose to ascend beyond separation consciousness. The larger pillar represents ascending to 4th dimensional consciousness.
We have the choice what we will choose to do. Those who choose to move to 4th dimension, heart centered beingness will go to an "ascended" state of consciousness. that's what I was shown.