No, that can bee seen on the inbound platform. This is further down the tunnel towards Arlington.
About the ventilator shaft in the cemetery, that's the Old Granary Burial Grounds next to Kings Chapel at the corner of Tremont and School St. About 10 years ago my mom worked as a tour guide there, and they used to jokingly refer to it as "The Entrance to the Underworld" or something like that. And they probably did use that line on tourists, too, since it almost looks convincing until you hear the trains going by. I'm not sure why it's such an ornate structure instead of just being a grate in the ground.
But considering the location in a cemetery, and also that Kings Chapel has crypts in the basement containing the bones of old deceased ones - just a few yards away from the ventilator shaft - it's a very fitting joke!
And yeah, I remember reading an article in the Boston Globe a couple years ago where the reporter went on a very private tour into the abandoned Tremont tunnel. I think the tour group consisted of an MBTA official, the reporter, and a woman who could supposedly connect with the ghosts of workers who died while building the tunnel or something like that. I think it said that there were still rotting ties and rusted rails down in there, and that there was trash or junk everywhere. Pretty spooky (and unsafe), apparently...