Jungle

Field guide No. 530

In a tiled institutional corridor, a heavy wooden door swings open and bends back round into its own frame, so the way through leads straight back out. Very secure, in its way.

The self-returning laboratory door

Always back where you started.

In a tiled institutional corridor, a heavy wooden door swings open and bends back round into its own frame, so the way through leads straight back out. Very secure, in its way.

Field noteDoors lead somewhere else. This one bends back into its own frame, so going through it is the same as staying.

Specimen
No. 530
Kind
Impossible (the round square kind)
Where it doesn’t exist
A tiled institutional corridor.
Nearest existing relative
A swing door.
Filed in Fresh slop as
Spaces

Also impossible, also breaking physics