Great diretrosnub disnub decahecatonicosadishexacosichoron

The great diretrosnub disnub decahecatonicosadishexacosachoron, or gadros daskydox, is a nonconvex uniform polychoron that consists of 1200 regular icosahedra (falling into pairs into the same hyperplane, forming 600 small retrosnub disoctahedra), 4800 octahemioctahedra (also falling into the same plane, forming a compound of two octahemioctahedra), 4800 truncated tetrahedra (forms a compound of two truncated tetrahedra), and 1200 more truncated tetrahedra (forms 120 truncated icosicosahedra).

This polychoron can be obtained as the blend of 10 great dipentary hecatonicosadishexacosachora. In the process some of the octahemioctahedra blend out fully, while the other cells compound as noted above.