 SCP-057 is a subterranean chamber. Artifact is comprised of impenetrable slate-colored stone. Inside the chamber are dozens of parallela-pipehead monoliths, extending from floor to ceiling, that slide in various directions while SCP-057 is active. It was discovered several meters below an undisclosed location, during the construction of a secure containment enclosure for SCP-1, which was consequently assigned an alternate location at site. An entrance to the chamber is located on the northeast side. When a human enters, the door shuts, and the walls inside the chamber move in such a way as to require the subject's constant attention to maintain a safe course through the artifact. The monoliths slowly open and close, until the subject either surrenders or exhausts themselves, at which time SCP-057 crushes them and reverts to its original inactive state after a period of approximately 20 seconds.