Rhombic triacontahedra (RT) are placed at the 14 vertices of a rhombic dodecahedron (RD). RTs are connected at their threefold vertices. If the RTs are moved closer together, the adjacent RTs intersect in a prolate rhombohedron, forming a closed structure. A cube and a rhombic dodecahedron with variable size are included to show their relationship with the cluster of RTs.