Grand retrointercepted ditetrahedronary hecatonicosiprismatohecatonicosachoron

The grand retrointercepted ditetrahedronary hecatonicosiprismatohecatonicosachoron, or grand thiphi, is a nonconvex uniform polychoron that consists of 120 great ditrigonary icosidodecahedra, 1200 triangular prisms, and 120 great rhombidodecahedra. Four great ditrigonary icosidodecahedra, twelve triangular prisms, and twelve great rhombidodecahedra join at each vertex.

Vertex coordinates
Its vertices are the same as those of its regiment colonel, the grand ditetrahedronary hexacosidishecatonicosachoron.