 SCP-052 is a Type R-4 New York City subway train. Official records indicate this train was built in 1932 and decommissioned for scrap in 1975. Nevertheless, it continues to appear on the Uptown AD track at 59th Street and 8th Avenue station at 11.57 p.m. every Saturday. The train is in perfect condition and labeled as an A train. SCP-052 appears at the designated time, opens its doors to accept and discharge passengers for approximately 5 minutes, then closes its doors and disappears. It does not appear to ever contain passengers, except for those leaving the train during its appearance. The majority of subjects that have boarded SCP-052 have not been recovered.