Great hexacositrishecatonicosachoron

The great hexacositrishecatonicosachoron, or gixathi, is a nonconvex uniform polychoron that consists of 600 truncated tetrahedra, 120 truncated great dodecahedra, 120 quasirhombicosidodecahedra, and 120 great rhombicosidodecahedra. 1 truncated tetrahedron, 1 truncated great dodecahedron, 1 quasirhombicosidodecahedron, and 2 great rhombicosidodecahedra join at each vertex.

Vertex coordinates
Its vertices are the same as those of its regiment colonel, the hecatonicosihexacositruncated hexacosihecatonicosachoron.