Item #: SCP-988
Object Class: Keter
Special Containment Procedures: Item SCP-988 is to be stored in a soundproof, unlit chamber 20 meters wide and 50 meters tall. Inner walls are to be made of limestone, 4 meters thick, outer walls preferably a strong alloy. Temperature in the chamber must be below 216.333 K at all times. If temperature reaches above 238.21 K commence operation 83F. Only single agents allowed in chamber at any time, must wear heat suppressing suit. Food is to be transported in a heat suppressing container and opened remotely from observation center after agent has placed the container and out of chamber.
Description: Discovered in a cave in North-East Ridge of Mt. Everest, discovered by George Mallory and Andrew Irvine on June 8th of 1924. Remains disposed of. Cameras destroyed. Bodies replaced by lookalikes.
SCP-988 is a winged creature with two claw-like arms. Item's head emits bioluminescence similar to ceratias holboelli. Has no visible facial features until item senses heat. When item senses heat, SCP-988's head opens and emits a shriek whose frequency shreds through most materials. Sedimentary rock has proven most resistant. Attempts to study the sound after being prerecorded has resulted in the death of 6 scientists. Item's skin is opaque and pale. SCP-988 feeds through a separate hole located on its chest. No excrement has been expelled by SCP-988.
Addendum: Scientists must study the sound's frequency and wavelength. Clip is not to actually be played under any circumstances.
Audio Clip R20//:788-792
*ACCESS RESTRICTED TO SECURITY CLEARANCE LEVEL 3 PERSONNEL*