From Scp Wiki
Object Class: Euclid
Special Containment Procedures: SCP-015 is impossible to move at this time, and is contained on-site. A gap of at least six feet needs to be maintained around the entire structure containing SCP-015, and no structures of any kind are to be touching SCP-015's current containment structure. Exploration is allowed, but must be done in three man teams with full safety lines and GPS tracking. Any protrusions from SCP-015 must be capped and sealed as soon as possible, with the new site recorded and logged.
No aggressive action is to be made within SCP-015. No hand tools or power tools are to be carried anywhere inside #015. No repairs or maintenance is to be made anywhere on #015.
Description: SCP-015 is a mass of pipes, vents, boilers and other plumbing objects completely filling a warehouse in Sapporo. The pipes appear to grow when not being observed, attempting to connect to nearby structures via sewer systems and underground plumbing. SCP-015 contains, at current estimate, over one hundred and twenty miles of pipes, ranging in size from 1" diameter to several feet. Some pipes appear new, while others are rusted and leaking. Pipes have been reported as being made of bone, wood, steel, pressed ash, human flesh, glass and granite.
SCP-015 reacts to tools and aggression. Any subjects acting violent or carrying tools, or attempting to damage or repair SCP-015 will trigger a reaction. Any pipes near the subject will burst, spraying on the subject for several seconds before the flow suddenly stops. Pipes have been reported containing oil, mercury, rats, a species of insect not yet identified, ground glass, sea water, human organs, and molten iron. Pipes will continue to burst around subject until death or retreat.
SCP-015 was cut back to its current structure after attaching to eleven other structures in the area. Eleven personnel were killed, and over twenty are still missing at this time. Reports have been made of banging or screaming from inside SCP-015.