Retroditetrahedronary dishecatonicosachoron

The retroditetrahedronary dishecatonicosachoron, or radatady, is a nonconvex uniform polychoron that consists of 120 ditrigonary dodecadodecahedra and 120 dodecadodecahedra. Four ditrigonary dodecadodecahedra and six dodecadodecahedra join at each vertex.

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