Great snubretrosnub prismatodisnub pentishexacosichoron

The great snubretrosnub prismatodisnub pentishexacosichoron, or gosirspidspox, is a nonconvex uniform polychoron that consists of 600 small stellated dodecahedra, 1200 icosahedra (falling into pairs in the same hyperplanes, forming 600 snub disoctahedra), 2400 octahemioctahedra and 2400 cuboctahedra (forming 2400 compounds of one of each), 600 cubohemioctahedra (forming 120 great antirhombicosahedra), 600 icosidodecadodecahedra, 600 great ditrigonal dodecicosidodecahedra, and 6000 triangular prisms.

One small stellated dodecahedron, two icosahedra (two compounds), four octahemioctahedra and four cuboctahedra (eight compounds), one cubohemioctahedron (one compound), five icosidodecadodecahedra, five great ditrigonal dodecicosidodecahedra, and five triangular prisms join at each vertex.

It can be obtained as the blend of 5 great dipentary prismatohexacosihecatonicosachora and 5 great dipentary trishecatonicosihecatonicosihexacosichora. In the process, some of the octahemioctahedron and cuboctahedron cells blend out.

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