item #: SCP-MLG
Object Class: Euclid
Special Containment Procedures: SCP-MLG is to be surrounded by two (2) five (5) meter-high brick walls at Site MLG-1 and Site MLG-2. The area surrounding SCP-MLG is a no-fly zone. Personnel staff assigned to SCP-MLG are to order any unauthorized inbound aircraft to change course immediately. If the pilot fails to comply to three warnings, use of deadly force is authorized.
Description: SCP-MLG is a semicircular arch composed of an unidentified translucent, white gas. The gas is unaffected by any force that would cause the deformation of the arch; as a result, no particles have ever migrated from the shape. The arch has a diameter of twenty (20) meters, a height of one hundred (100) meters and a length of one hundred-twenty (120) meters.
Subjects standing within one base of the gas, which is referred to as SCP-MLG-1, first experience an intense burning sensation in their eyes, causing an instinctual need to close them immediately. When the subject's eyes have closed, they will report being able to perceive another area, with a thick white fog surrounding them, completely blocking any view outside of a 20-meter diameter area. Areas described by subjects have been confirmed to be identical to those covered by the unoccupied base in every test. The observed location is referred to as Site MLG-2. Subjects within Site SCP-MLG-1 have also reported certain patches of ground glowing orange in Site-SCP-MLG-2, investigation shows that glowing locations indicate subterranean hazards, including explosives, venomous flora and fauna, sensitive tectonic faults and floors showing weak integrity. Should the subject begin to travel from where they are standing, the arch will appear to follow their path, changing direction in a manner that keeps Site SCP-MLG-2 in front of them at all times. In order to exit the gas, the subject must force their eyes to remain open while in motion; however, this effect only occurs with the first person to enter the gas during any test. The burning sensation in their eyes will last anywhere from twenty-four (24) hours to ten (10) days.
Prolonged exposure to gases causes blisters filled with blood to form on the subject's skin, resulting in severe discomfort. Over time, the blisters will increase in pressure, progressively bursting until the subject dies of blood loss. Accumulated blisters and wounds will last for no less than ten (10) days after exposure to the gas is cut off.
Discovery Log: SCP-MLG was discovered after a geyser erupted in [DATA EXPUNGED], resulting in a single casualty. A witness of the event proceeded to alert authorities. SCP-MLG assumed its current shape within three minutes of eruption. Despite a complete lack of remaining gas consistent with SCP-MLG within the area, the region continues to be monitored for further eruptions and the vent has been filled using concrete.