A net is a 2D shape that folds to make up a 3D shape. The net of a dodecahedron (a platonic solid with twelve pentagonal faces) is made up of 12 regular pentagons. A cube has six faces.

There is no uniformity in the size or shape of the dodecahedra found so ... appeared to be a large pit—that a perfectly crafted dodecahedron was found. It's the 33rd to be found in England ...