Great spinoprismatohecatonicosihecatonicosachoron

The great spinoprismatohecatonicosihecatonicosachoron, or gnaphihy, is a nonconvex uniform polychoron that consists of 120 dodecahedra, 720 pentagonal prisms, and 120 rhombicosahedra. One dodecahedron, three pentagonal prisms, and three rhombicosahedra join at each vertex.

Vertex coordinates
Its vertices are the same as those of its regiment colonel, the small disprismatodishecatonicosachoron.