Small spinoprismatohexacosihecatonicosachoron

The small spinoprismatohexacosihecatonicosachoron, or snapaxhi, is a nonconvex uniform polychoron that consists of 600 tetrahedra, 1200 triangular prisms, and 120 small rhombidodecahedra. One tetrahedron, three triangular prisms, and three small rhombidodecahedra join at each vertex.

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