洞くつ入口 : エスカレーター
> 映画を再生、左右の側
 
Backing up, we see that this large internal space is not as 暗い as might be supposed. It's filled with an ugly green light. Sharp things seem to hang down from the ceiling, giving the sense of a space with many fractional parts; where large and small are about the same, except for the fact that they are in different places.