In the geometry of hyperbolic 4-space, the order-4 24-cell honeycomb is one of two paracompact regular space-filling tessellations (or honeycombs).
It is called paracompact because it has infinite vertex figures, with all vertices as ideal points at infinity.
With Schläfli symbol {3,4,3,4}, it has four 24-cells around each face.
It is dual to the cubic honeycomb honeycomb.
It is related to the regular Euclidean 4-space 24-cell honeycomb, {3,4,3,3}, with 24-cell facets.