Steam tunnels? Yes, they're there, and yes, you can get damned near anywhere through them.
When I was a fish and a p-head, a couple buddies & I routinely visited the tunnels, and our favorite destination was the cafeteria in The Commons. After eating under duress in Duncan, it was always fun to go raid the dessert refrigerator in the oh-dark-thirty hours & load up. One time, we actually left tracks on the floor, but my amigo's idea to clean them up with his t-shirt only exacerbated the problem... so we bolted. Took me a few months to screw-up the courage to revisit THAT target area, for sure!
Another time, we got totally lost over in the vicinity of the Journalism Building [we knew where we were b/c we'd "prairie-dogged" up through a man-hole & saw it]. Anyway, we ended up in an old ["Fish '22'" in candle-scorch on the overhead] that ran [probably still runs

] under Military Walk. We prairie-dogged again & discovered we were right in front of Walton Hall; right in front of a bunch of non-regs savoring some Lone Stars on the steps! We pushed the cover out of the way, hopped out, dusted off, and sauntered away like we were supposed to be there! It was pretty funny, b/c the beer-drinkers kinda looked at us like, "Oh, somebody's comin' out of the steam tunnels..." and went back to their '42 game!
The last good steam tunnel story I'll share is the one involving some of the dork-heads who were in my outfit, a class ahead of mine; when they were fish.
These two pin-heads went tunneling one night during finals week & got lost. Hey, that happens.
They decide to prairie-dog, again, not necessarily a below-average in headwork. They climb up a ladder they see & shine their light through the grate from below.
Now, this is where their judgement really starts to come into question for me, since what they hoped to see is a mystery, I mean, try looking through the bottom of a coffee can with holes in it & you'll share the same sight you see looking up out of the steam tunnels through a man-hole cover. Anyway, they shined their light right up through the legs of a Kampus Kop who'd decided to warm himself on that cold December night by standing on a steam-tunnel man-hole cover!
Again, not an unrecoverable situation. When the KK yells, "Hey! Come out of there!", you drop your butt back down the ladder & haul-a$$. These two mental giants, however, decided to ask the KK to step off the cover, push it out of the way, and, well, you can guess the rest of the story. Duh.
They were supposedly suspended for the balance of the semester but they sure were there to "welcome" my fish buddies & me after FOW. Had very little respect for these two...

!