Personnel assigned to maintain the containment pattern are instructed to silently walk down the center of the main hallway at a slow but steady pace. Attracting the attention of said entities is invariably fatal, and may or may not occur due to one of the following criteria: The cell block is inhabited by what appears to be one or more hostile spectral entities. This pattern slowly degrades over time due to normal environmental decay and must be maintained regularly.
A complex pattern, drawn in human blood is located on the wall behind the electric chair.
Distance from entrance to the execution chamber is approximately 166.5 meters.
SCP-450 is the death row block of the abandoned ██████████ Federal Penitentiary in █████████, ██.
Face of an SCP-450 spectral entity, for example.
