No, tunnels do not bother me, and I am not really claustrophobic.
I sometimes get a strange feeling in a large, or super large shopping centre, and I cannot stand an MRI or CT scan where your head has to go in, but I think many people seem to dislike these type of scans.
Not at all!!! Which is a good thing really,as I have to have so many regular scans in these Tunnel-like machines which are used nowadays!! The very first thing they ask me is whether I am claustrophobic or not!!
I don't like underground car parks. Once I have been there a few times I don't really mind though. We have a new shopping centre ( or an upgraded one). When it first opened, I couldn't park there. The car parks themselves seem smaller than they once were. I'm not sure whether they are now, and I would go there to park. At another shopping centre the same distance away. I am more familiar with it, as I have shopped there since I was young, or younger. I don't mind their underground car park and do park there sometimes, but I prefer to park in the outside car park. Apart from that, I'm pretty good. We have taken the kids down mines for fun and to explore, without any problems. I have been to a gold mine and a coal mine in Victoria and the Buchan caves.
No, not too bad with claustrophobia but I sometimes get a queer feeling in big shopping centres with lot of shine on floors like marble, might be the opposite to the problem you mention might be fear of "open" spaces.
No, not in tunnels, but I used too, in those old fashioned lifts, because I kept thinking it was going to brake down, while I was in it! Only 1 actually did, but it was only a 3 floor lift, & someone came & rescued us in 10 mins, thank havens! I'm glad I wasn't in the lift on my own, but with a friend.