Fallout 4 was announced no more than a few days ago, but a group of fans are claiming to have discovered the location for Vault 111 within the game.
Unlike other vaults in the Fallout series, Vault 111 features an entrance that is unlike a typical pneumatic hull. At the same time, the hatch also opens to give way to an interior elevator. Fallout 4 is not set to premiere until Bethesda's showcase during E3 2015 in California, so not a lot is known yet about Vault 111 and other locations in the game.
A group of nine Fallout fans showed in a series of images posted on Imgur how they picked apart the three-minute trailer for Fallout 4 to zero in on the locations of fictitious events and landmarks within the game. To do so, they used the relative position of a certain spot to other more recognizable landmarks in the real world, like the Skywalk Observatory and the Boston State House. In screen shots of the trailer, the two landmarks were shown to be about less than half a mile apart. Using that distance to scale, the group created a rough estimate of a Fallout 4 map.