This chakra is the seat of the soul. It is who you truly are as a being in this universe. Not to be confused with being the universe as you already are, you just have to realize it.
It is located in the thymus inbetween the heart and throat chakra. As soon as you start to open it you will begin to feel who you truly are. It can bring sudden changes to your personality as it slowly sheds your ego away so you can become who you were truly meant to be. Beginning at birth we were indoctrined to believe certains things about social structures, how we should behave, how we should think and what we identify with as we all know before.
Open it and see for yourself. I for one have found my true home. It is with lucifer, lilith and the
rest of the demons. It is truly where i belong.