Great hexacosihecatonicosachoron

The great hexacosihecatonicosachoron, or gixhi, is a nonconvex uniform polychoron that consists of 600 truncated tetrahedra and 120 truncated great icosahedra. 2 trunctaed tetrahedra and 2 truncated great icosahedra join at each vertex. It is the medial stage of the truncation series between a great grand stellated hecatonicosachoron and its dual grand hexacosichoron, which makes is the bitruncation of either of these polychora.