Small rhombic hecatonicosihecatonicosachoron

The small rhombic hecatonicosihecatonicosachoron, or sirhihy, is a nonconvex uniform polychoron that consists of 120 truncated great dodecahedra, 120 small rhombidodecahedra, and 720 pentagrammic prisms. 2 of each type of cell join at each vertex.

Vertex coordinates
The vertices are the same as those of the regiment colonel, the small rhombated grand hecatonicosachoron.