Object Class: Euclid Special Containment Procedures: SCP-232-ARC is to be kept in the center of an empty 20 x 20 meter room. The floor and walls must be made of white shadow-reducing substances, and the lighting should be multiple redundant recessed lamps set into the ceiling. Shadows are to be prevented from forming within 8 meters of SCP-232-ARC. Lights should be replaced as soon as possible when required, using the crawlspace above the room to replace the bulbs from above. Should a full power outage, including backup generator failure, occur, the entry will seal automatically.