Great snubretrosnub dishexacosipentishexacosichoron

The great snubretrosnub dishexacosipentishexacosichoron, or gosirsadixpox, is a nonconvex uniform polychoron that consists of 1200 great icosahedra (falling into pairs in the same hyperplanes, forming 600 small retrosnub disoctahedra), 600 icosahedra and 600 great dodecahedra (forming 600 compounds of one of each), 2400 octahemioctahedra and 2400 cuboctahedra (forming 2400 compounds of one of each), 600 cubohemioctahedra (forming 120 great antirhombicosahedra), 600 rhombidodecadodecahedra, 600 great dodecicosidodecahedra, and 600 great dodecicosahedra.

Two great icosahedra (two compounds), one icosahedron and one great dodecahedron (two compounds), four octahemioctahedra and four cuboctahedra (eight compounds), one cubohemioctahedron (one compound), five rhombidodecadodecahedra, five great dodecicosidodecahedra, and five great dodecicosahedra join at each vertex.

It can be obtained as the blend of 5 great dipentary hexacositetrishecatonicosachora and 5 great dipentary dishecatonicosihexacosihecatonicosachora. 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.