Grand retroditetrahedronary dishecatonicosihexacosichoron

The grand retroditetrahedronary dishecatonicosihexacosichoron, or gard tadhix, is a nonconvex uniform polychoron that consists of 600 tetrahedra, 120 ditrigonary dodecadodecahedra, and 120 great dodecicosidodecahedra. Four tetrahedra, four ditrigonary dodecadodecahedra, and twelve great dodecicosidodecahedra join at each vertex.

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