Great diretrosnub prismatosnubdisnub pentishexacosichoron

The great diretrosnub prismatosnubdisnub pentishexacosichoron, or gadersposidspox, is a nonconvex uniform polychoron that consists of 600 great icosahedra, 600 icosahedra, 4800 octahemioctahedra (falling into pairs in the same hyperplanes, forming 2400 compounds of two), 600 great dodecicosahedra, 600 great dodecicosidodecahedra, 600 icosidodecadodecahedra, 3600 pentagonal prisms, and 6000 triangular prisms.

One great icosahedron, one icosahedron, eight octahemioctahedra (eight compounds), five great dodecicosahedra, 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 dipentary dishecatonicosihexacosihecatonicosachora and 5 great dipentary disprismatohecatonicosihexacosihecatonicosachora. 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.