|The following is based on Van Buren and has not been confirmed by canon sources.|
The Boulder Train Station is the initial entry point into Boulder for the PC, and the only access point for all trains that enter and leave the city. Victor Presper has a personal train he used to get here.
Before the WarEdit
Trains were probably not used to a great extent for human transportation before the war. With new technologies like Vertibirds, trains only really were used to bring goods in and out. During the construction of the Boulder Dome, it is likely that the raw materials and parts for the structure were brought in via trains.
After the WarEdit
For people from the West coast traveling east, trains are the only feasible method of transportation without cars. Knowing that the NCR still has working access railroad lines from California to Colorado is amazing. So far, at least 3 different trains are known to have traveled here: the NCR train, the one being responsible for bringing all the scientists to and from the Dome; Presper's personal train (if found, it is rigged with explosives); and the PC's own personal train.
The train station is infested with Jackals who are apparently trying to figure out what the trains are, and how they got there. If the PC enters Boulder with his/her own personal train, they will become hostile and attack. Although, the station itself is pretty big, most of the lines leading in and out of the station are unusable because of debris blockage. From here, the player can access the Jackal camp, the secret tunnel entrance, or the west quarantine center of the dome. The preferable way to go is the trail leading directly to the dome, as the Jackals will attack the player if he/she enters their camp, and the secret entrance is initially hard to find.
If the PC encounters Presper's train at the station (determined by a luck roll), he/she will find that it is rigged with explosives, and will find a remote detonator attached to the charges. Next to the train, there are codes apparently for 'hacking' the locked exterior doors, but are actually special hacks that, if the PC picks up, will severely mess with their Pip-Boy functionality.