 SCP-450 is the death row block of the abandoned Federal Penitentiary. Distance from entrance to the execution chamber is approximately 166.5 meters. A complex pattern, drawn in human blood, is located on the wall behind the electric chair. This pattern slowly degrades over time due to normal environmental decay and must be maintained regularly. SCP-450 is to be kept locked and secured at all times, except for monthly maintenance and cleaning as detailed below. Any civilians or personnel who enter SCP-450 at any other time are to be considered lost.