Great diretrosnub prismatosnubdisnub hexishexacosichoron

The great diretrosnub prismatosnubdisnub hexishexacosichoron, or gadrosposid shax, is a nonconvex uniform polychoron that consists of 600 great icosahedra and 600 small stellated dodecahedra (falling into pairs in the same hyperplanes, forming 600 compounds of one of each), 600 icosahedra, 4800 octahemioctahedra (forming 2400 compounds of two), 600 truncated great icosahedra, 600 great dodecicosidodecahedra, 600 icosidodecadodecahedra, 3600 pentagonal prisms, and 6000 triangular prisms.

One great icosahedron and one small stellated dodecahedron (two compounds), one icosahedron, eight octahemioctahedra (eight compounds), five truncated great icosahedra, five great dodecicosidodecahedra, five icosidodecadodecahedra, five pentagonal prisms, and five triangular prisms join at each vertex.

It can be obtained as the blend of 5 great invertidipentary hecatonicosihexacosidishecatonicosachora and 5 great dipentary disprismatotrishecatonicosihexacosichora. In the process, some of the octahemioctahedron cells blend out.

Vertex coordinates
Its vertices are the same as those of its regiment colonel, the great diretrosnub disnub decahecatonicosadishexacosichoron.