Retrosphenoverted hecatonicosidishexacosichoron

The retrosphenoverted hecatonicosidishexacosichoron, or rawvhiddix, is a nonconvex uniform polychoron that consists of 600 regular octahedra, 600 truncated tetrahedra, and 120 great icosicosidodecahedra. 1 octahedron, 2 truncated tetrahedra, and 2 great icosicosidodecahedra join at each vertex.

It is in the same regiment as the sphenoverted ditrigonal hexacosidishecatonicosachoron.