Information

Map of Yellowstone National Park retrieved from US National Parks Service website. Click to enlarge.
Name: The Yellowstone Anomaly
Author: Communism will win
Rating: 809/861
Created at: Tue Jul 09 2013
Item #: SCP-1422
Object Class: Neutralized // Phenomenon (see Addendum 1422-3)
Special Containment Procedures
All information on SCP-1422 is restricted to personnel with Level 4 Operational Clearance. As of March 18, 2009, all personnel have been informed of Yellowstone National Park's existence, and personnel with insufficient clearance have had their memories of SCP-1422 removed.
See Task Force Alef-4's charter for information on Foundation efforts to identify the causal agent of SCP-1422. The identification of this agent is of high priority.
Description
SCP-1422 was an anomalous phenomenon that, prior to July 9, 2007, prevented all Foundation personnel (including conscripted individuals, such as D-class personnel, and jointly employed personnel) from learning of the existence of Yellowstone National Park1. The existence of SCP-1422 has been confirmed through several methods:
Interviewed personnel have either stated that they had no reason to pay attention to the area of the United States in which Yellowstone National Park is located, or could not recall what, if anything, was located in that area. Several were able to recall conversations or events in which Yellowstone National Park would most likely be mentioned, but was not.
Yellowstone National Park itself is not believed to have any unusual properties, as several investigations have not detected unusual levels of anomalous activity in the park or its vicinity. Approval for Foundation personnel to visit the park during vacations is pending.
Addendum 1422-1
SCP-1422 was discovered, and is believed to have been neutralized, on July 9, 2007 by Junior Researcher Scranton. JR Scranton had been asked to compile a report describing his experiences in SCP-████3; in it, he included a two-paragraph description of a family vacation to Yellowstone National Park. JR Scranton noted that he had not heard of the park prior to his entrance into SCP-████. This documentation was reviewed by Dr. Graff and Junior Researcher Halvorsen.
When Dr. Graff performed a cursory search of relevant reference materials and discovered that Yellowstone National Park not only existed, but was world-famous and widely known, she sent an e-mail to Site 44's mailing list, asking personnel if they had heard of the park. When it became apparent that none had, Dr. Graff requested and obtained funding and personnel to investigate the anomaly further.
Addendum 1422-2
Information on the cause of and exact nature of SCP-1422 is very limited. Several hypotheses relating to SCP-1422 have been put forward:
Addendum 1422-3
Several personnel have rightly pointed out that SCP-1422 may not be truly neutralized, but simply operating in a different manner that we are unable to recognize; alternatively, numerous anomalies similar to SCP-1422 may exist, each tailored to specific locations, individuals, or even concepts. Indeed, if either of these were proven to be true, SCP-1422 would most likely qualify for Keter-ubique classification and heavily revised containment procedures. However, as SCP-1422 does not exhibit any observable anomalous properties (except those that no longer appear to be in effect), it is considered neutralized until proven otherwise.- Dr. Graff.