Jason Goodman's Labrador Sea cruise: The Citadel

Thu, 30 Jan 1997
...there's a giant British fort called The Citadel two blocks from my hotel. I walked around it last night, being careful not to fall into the 20-foot-deep trenches around it.

Sun, 2 Feb 1997
I walked up the hill to the Citadel, the fortress I mentioned last time. Remember I described a giant defensive ditch cut around the thing? It's more than that: the whole top of the hillside has been dug out beyond the ditch, forming a huge courtyard with barracks inset into the hillside, facing inward toward the courtyard.

The barracks are "underground" in the sense that they're covered with dirt, but they have windows looking out into the courtyard on one side and the ditch on the other. From the base of the hill, though, it's just an ordinary hillside with an observation mast and chimney-tops sticking out of the ground.

I can't imagine how one could ever capture this fortress without B-52s or helicopters.