In the physical plane we find the Cubic Stone, which is in reference to the 9 atomic hells (parallel but different vibrational densities within the inferior astral counterpart of the submerged mineral kingdom).  It refers to the 9th Sphere that Dante Alighieri writes about in his monumental masterpiece The Divine Comedy, a compilation of his research on the mysteries of nature within the parallel universes.  The surrounding lines are representative of the Waters of Life.