The 120-cell can be partitioned into 12 disjoint 10-cell great circle rings, forming a discrete/quantized Hopf fibration.  Starting with one 10-cell ring, one can place another ring alongside it that spirals around the original ring one complete revolution in ten cells.  Five such 10-cell rings can be placed adjacent to the original 10-cell ring.  Although the outer rings "spiral" around the inner ring (and each other), they actually have no helical torsion.  They are all equivalent.  The spiraling is a result of the 3-sphere curvature.  The inner ring and the five outer rings now form a six ring, 60-cell solid torus. One can continue adding 10-cell rings adjacent to the previous ones, but it's more instructive to construct a second torus, disjoint from the one above, from the remaining 60 cells, that interlocks with the first.  The 120-cell, like the 3-sphere, is the union of these two (Clifford) tori.  If the center ring of the first torus is a meridian great circle as defined above, the center ring of the second torus is the equatorial great circle that is centered on the meridian circle. Also note that the spiraling shell of 50 cells around a center ring can be either left handed or right handed.  It's just a matter of partitioning the cells in the shell differently, i.e. picking another set of disjoint (Clifford parallel) great circles.