Ignore every single thing on that photo to do with resident evil other than the design, and even still the base does NOT have a underground railway...
Name: The Bunker
Description: The Bunker, devised by Magnus with the help of Hale to be the most technologically advanced vampire civilization to exist, it is capable of housing thousands of vampires as well as various equipment. Above it looks like a normal cave system, but inside said cave system there is a hidden entrance that leads below into the sprawling fortress. The Bunker is fully equipped with camera's in it's entirety, the terminals being accessible in one humongous room filled with TV monitors and the like linked to the camera feeds. It also has several security measures in the very VERY slim chance someone breaks in, these include mini guns inside the walls, hidden by portions of wall tiles, each connected to their own power source in the case of a EMP blast it will be very hard to disable all of them. They are mostly located at the entrance and other sensitive areas, such as equipment storage, Magnus and Hales room, etc.
They have one flaw, that is, they are heat seeking. Basically if they send vampires in, the turrets won't fire as vampires do not give off a significant enough, if any, heat signature to be picked up by the scanners. There are ways to De-activate the turrets so that human's can entered if authorized, but only Magnus and the higher ups such as Hale have such knowledge.
Mini guns(more or less):
Secondly, if the mini-guns fail, a sleep toxin that will almost instantly knock out any human or weak vampire can be emitted across the entire base, but this takes time. It can also be emitted to certain targeted areas almost instantly.
And of course, if all else fails and Magnus and the rest of the higher ups manage to die, the fortress will undergo self destruct proceedures. Killing EVERYTHING in the base as well as making a nice sized crater in the earth, probably causing a earthquake in the immediate area, probably destroying Kilo Point as well.Regardless, mass destruction happens, period.
Of course, Magnus has a wide variety of gear purchased and available to him and those he trained to wield it. It includes but is not limited to, Jeeps, ATV's, machine guns, pistols, etc. But, unfortunately, most vampires aren't trained to use said weapons correctly as their natural primal instinct takes over and they say fuck all to everything around them and go nuts. BUT, good news is, he has bulletproof gear for the lot of them. While, it won't stop a constant barrage of bullets or a sword to the face, it will stop bullets to the chest as well as stakes.
Thanks to Magnus...'bribing'(Basically threatning to blow their ass up if they didn't do as he wanted, ya know, the usual)...a few highly advanced tech companies working with the government this can be controlled by a experimental A.I(Artificial Intelligence) named BOB, yes, BOB. Hale decided BOB was a superior name, so since Hale helped fund the majority of it, Magnus just went with it without question. Of course, only Magnus and Hale and a few others have access to most of it's functions as obviously you wouldn't want every fledgling fucking around with the turrets. Good news with this is, inventory on food, blood, ammo, and all supplies are automatically kept by said A.I.