Rhombic-pyramid intersected 1-bidodecahedral swirltegum

The rhombic-pyramid intersected 1-bidodecahedral swirltegum is a convex isochoric polychoron with 240 identical cells.

Each cell of this polychoron has mirror symmetry, with 1 octagon, 2 enneagons, 2 heptagons, 2 hexagons, and 8 triangles for faces.