A

David

Darling

Freemish crate

Freemish crate

The Freemish crate is an impossible figure that can be drawn but not built. Also called Escher's cube or Hyzer's illusion, it is depicted in M. C. Escher's 1958 lithograph Belvedere and was subsequently redrawn by C. F. Cochran (1966) in the form of a crate.