. "There are several notations on the blast door map that appear to be dates. Some appear to indicate a \"shutdown\" occurred. What was shutdown and why it was shutdown are unknown. These dates use a month/day/year format. There is another date reference to a zoological research facility and a reference to something called an AH/MDG incident of 1985."@en . "There are several notations on the blast door map that appear to be dates. Some appear to indicate a \"shutdown\" occurred. What was shutdown and why it was shutdown are unknown. These dates use a month/day/year format. There is another date reference to a zoological research facility and a reference to something called an AH/MDG incident of 1985. Image:Hidden map dates.JPG|Enhanced close-up of dates at 6:00 on the Blast Door Map Image:Hidden map dates2.JPG|Enhanced close-up of date in the top right corner of the Blast Door Map Image:Hidden map dates3.JPG|Enhanced close-up of the notation at 10:00 on the Blast Door Map Image:Hidden map dates4.JPG|Enhanced close-up of the notation at 4:00 on the Blast Door Map"@en . "Blast door map timeline"@en . .