Grand retrosphenoverted hecatonicosihexacosihecatonicosachoron

The grand retrosphenoverted hecatonicosihexacosihecatonicosachoron, or garawv hixhi, is a nonconvex uniform polychoron that consists of 600 octahemioctahedra, 120 great icosidodecahedra, and 120 truncated great icosahedra. 1 great icosidodecahedron, 2 truncated great icosahedra, and 2 octahemioctahedra join at each vertex.

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