Originally Posted by
st530
Learn something new every day. I recall a few months ago seeing a sign for the B gates in the C North concourse but when I looked in that direction it appeared to be a wall of windows at the end of the concourse so I assumed it was just a poorly placed sign. I guess the trick is to know that it's a below-ground connection and to find the stairs or elevator. Will check this out next time!
The below ground hall way also has a bathroom. The hallway was always there but was blocked off to airport personnel only. As was said above it was opened when they finished the C1-15 refurb.