The picture of the world in our minds as a bounded circle is what could be said to be mystical. It appears that early on in at least this civilization of several over-lapping layers the deeply seeing seer-eyes gave birth to the yantras and the mandalas and other signs and symbols of potent power. The function of these yantras and mandalas (and the mantras that verbally spelled them out. Was two fold: on the one hand the penetration into such a sacred space was an initiation of ones soul.