The
axis mundi (also cosmic axis, world axis, world pillar and center of the world) is a symbol representing the mythical point of connection between sky and earth. It is claimed to offer a means of travel and correspondence between the two realms. It is also alleged to be the place where the four compass directions unite, allowing treasure from heaven to be disseminated throughout the world. This is said to place it at the center of the world: at its
omphalos (navel), the world's point of beginning.
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An Axis Mundi has nothing to do with the Catholic belief of "Purgatory".