Genus: 4
Symmetry: Multi-directional

This model from a vertex figure suggested by Don Hatch is not easily seen as a space packing of polyhedra, though it can be constructed as a packing of octahedra and tetrahedra with some faces removed. . It is particularly beautiful being composed of flat snaking paths of coincident triangles that stretch to infinity. The paths come in four different orientations, each shown here in a different color. The result is an impossible seeming figure that looks very much like the intersecting staircases in M.C. Escher's "House of Stairs" lithograph.

VRML 2 model

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