Great retrotrishecatonicosachoron

The great retrotrishecatonicosachoron, or girthi, is a nonconvex uniform polychoron that consists of 120 truncated great icosahedra, 120 truncated great dodecahedra, and 120 icosidodecatruncated icosidodecahedra. Two truncated great icosahedra, two truncated great dodecahedra, and four icosidodecatruncated icosidodecahedra join at each vertex.

Vertex coordinates
The vertices are the same as those of the regiment colonel, the small sphenoverted trishecatonicosachoron.