 SCP-358 is an abandoned trauma center. Exploration and monitoring has revealed anomalous activity, characteristic of typical Type 3 pseudo-spiritual manifestation, haunting. Test subjects began questioning who and where they were. Sand was recovered from the test subject's shoes. The exposed individual will show a slowly increasing degree of mental degradation. On rare occasions, affected subjects with an SCP-358 expire suddenly of apparent poisoning. Autopsy in these cases always reveals the venom of one or more common North American desert-dwelling predators in the bloodstream, usually that of Crotalis atrox, the western diamondback rattlesnake.