scp - 1 3 4 8 - 0 3 is the central chamber of the scp - 1 3 4 8 complex. due to high neutron flux, the chamber was originally believed to be a storage site for high - grade radioactive waste or an unshielded reactor core. initial investigation of the chamber by remote drone revealed an elaborate rectangular chamber, decorated in a proto - semitic style. repeated motifs include rams, serpents, slaughtered bulls, wounded lions, hawks, and depictions of ritual practices similar to scp - 1 3 4 8 - 0 2. in the center of the room is a raised platform with a 9 meter radius, surrounded by cylindrical sheath constructed of beryllium bronze.