He stood in a chamber that was a hollow cube perhaps a hundred feet square.

She contorted herself inside the hollow cube so that she could get her nose up against the green substrate wall.

The dogsled came to a halt inside a hollow cube the size of a world.

And a flat, lusterless hollow cube of slate gray sprang up to enclose everything.

It stands within a hollow cube poised on a solidly cubic base.

A cube has eleven nets (one shown above): that is, there are eleven ways to flatten a hollow cube by cutting seven edges.

Two MacMillans lifted the wizened body from the hollow cube and held it suspended at eye-level on their surface of magnetic force.

The zoombinis get trapped in the corners of a hollow cube.

The hollow cube promptly became solid - and colored.

In the center sat a hollow cube of clear Plexiglas.