Partially concave triacontahedron array

Description

Regular triacontahedra that are partially concave are stacked in a space filling array. This has a directional character, with an up/down axis. This is analogous to a 2-D "fish scale" tiling pattern, but in a 3-D field, a bit like stacking mushrooms. Some panels are left open for viewing how the cells nest together. Made with vZome